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Inside The Game Copy Protection Racket

simoniker writes "German game company and Accordion Hero creator Schadenfreude Interactive have been carefully considering what copy protection to use for their next game, and have documented their process in detail in a new Gamasutra article. After rejecting scratch and sniff cards, dongles, and musclebound Russian copy protection outfit NovaHammer ('You would not want any of your computer games to get hurt, would you?'), they come to the (fictional but agreeable!) conclusion: 'We decided against using any sort of copy protection on our games. After all, you shouldn't feel you are being forced to buy our games. You should want to. And if you do not want to, that is really our failure — not yours.'"

33 of 112 comments (clear)

  1. Ah, the memories by Southpaw018 · · Score: 4, Funny

    I remember losing my Prince of Persia manual and having to guess the first letter of the last word on page 30. That was annoying enough. But it's perhaps frightening commentary on the current state of DRM that I can't tell if the scratch and sniff card is or ever was real. Honestly. Was it? I can actually see a proprietary happy company like Sony coming up with something like that...

    --
    ACs are modded -6. I don't read you, I don't mod you, I don't see you. Don't like it? Don't be a coward.
    1. Re:Ah, the memories by sqlrob · · Score: 3, Insightful

      I can't tell if the scratch and sniff card is or ever was real. Honestly. Was it?

      Yes.

      Leather Goddesses of Phobos (although it was interactivity aid, not DRM) Infocom liked to put goodies in that would make you want to buy it rather than copy it.

    2. Re:Ah, the memories by Anonymous Coward · · Score: 2, Funny

      Okay, I'm all up with the latin here, but putting cum, leather, and goddesses in a single post has got to make some corporate surfers nervous.

  2. Wow! by Threni · · Score: 2, Insightful

    Are people still copy protecting games? Why? Has a single game been rendered uncopyable because of some dodgy disk format or some stupid `squint at page 23, col 2, line 4` nonsense? Time to give it up, guys. If unprotected media works for music and films, it's good for games too.

    1. Re:Wow! by MindStalker · · Score: 3, Insightful

      Nope, but restricted online play has helped a LOT. There are many games that have been bought not out of the goodness of a gamers heart, but for the right to play on official server. :)

      Otherwise no... People with money to burn will continue to buy games, people without will continue to pirate. People with money to burn that pirate for anything other than a trial deserve a special place in hell :)

    2. Re:Wow! by grammar+fascist · · Score: 2, Insightful

      The point isn't to make it impossible, it's to make it more difficult than just going out and buying it.

      As such, it doesn't actually take as much copy protection as content creators generally think. A single bit flag that commercial CD burning software respects would be enough.

      --
      I got my Linux laptop at System76.
    3. Re:Wow! by Threni · · Score: 2, Insightful

      > The point isn't to make it impossible, it's to make it more difficult than just going out and
      > buying it.

      It's easier to buy (create an account, sign in, order, select payment, enter credit card details, wait 4 days for it to turn up in the post) it than it is to download it off then net (find torrent site, enter game name, click, download, install)?

    4. Re:Wow! by mugnyte · · Score: 2, Insightful

      make it more difficult than just going out and buying it.
      "going out" and buying it is vastly more inconvenient.

      A single bit flag that commercial CD burning software respects would be enough
      Why care about burning a CD when disc space and bandwidth is cheap?

      Variations on a theme:
        - Bytes transferred to user's machine + swapped disk images can run the complete game.
        - Bytes captured from user's machine + swapped disk images can be copied.
        - Tricks to look for original media are removed from said software.
        - Online registration suffers from being just another "check" for a special value. It can be removed.

    5. Re:Wow! by Chosen+Reject · · Score: 2, Interesting

      People with money to burn will continue to buy games, people without will continue to pirate. People with money to burn that pirate for anything other than a trial deserve a special place in hell

      Are you suggesting that if you don't have money then you should be able to pirate without consequence? I really hope not. I am 100% against DRM (except for in rental situations), and I think the RIAA/MPAAs tactics have been really lame and stupid, but that's just stupid to say people who can't afford certain items shouldn't have to pay for them. Yes I realize that it's not stealing, yes I realize that if they do pirate it the companies have not lost anything. Nevertheless, these are not necessary items. This isn't food and shelter and clothing we are talking about here. This isn't medical care and the like. These are games, movies, music, books, etc. Luxuries. Things people can live without. There are many more avenues of entertainment than these. Radio is free, provided you have a radio. Broadcast TV is free, provided you have a TV. Plenty of stuff on the internet is free, provided you have a computer and internet connection. And if you don't have those things, you aren't pirating anyway. Books, DVDs, CDs, and even some games are now at libraries where they can be checked out for free without pirating. Here again is a way to be entertained, informed, or whatever without the need for advocating piracy among the poor.

      Anyway, I hope I didn't misread what you said.

      --
      Stop Global Warming!
      Just say no to irreversible processes!
    6. Re:Wow! by FLEB · · Score: 2, Interesting

      Nope, but restricted online play has helped a LOT.

      The problem with that? Try getting a game secondhand. Actually, I've even had enough problems getting games with just serial keys second-hand from yard sales. Perfectly usable disc, but if it's not in the right case... well, there's a five-dollar coaster. I'd look for a keygen, but there's little chance of finding one that isn't just a shameless Trojan.

      --
      Information wants to be free.
      Entertainment wants to be paid.
      You just want to be cheap.
    7. Re:Wow! by Goldberg's+Pants · · Score: 4, Interesting

      No other industry gets away with selling broken products, so why the fuck should the software industry? Treat them like they treat us. We're all thieves in their eyes. If we weren't, shit like Starforce would never exist. Pirate away folks!

      Copy protection is why I've largely stopped bothering with the PC gaming industry. Neverwinter Nights was the worst. There was a two month period where, thanks to Securom, I couldn't run the game. Then there's Warcraft 3. I had to use a no-cd crack as the protection wouldn't work on my drive... But there's a CRC check when you log on to Battle Net, which meant I could no longer play the game I paid for online. (Same with Nascar Racing 2003.)

      Starforce was the straw that broke the camels back. I installed a demo, and Starforce was installed. (Before someone starts yelling "Idiot, why would it be on a demo?" as has happened before on here, they put it on the demo as well so crackers can't use the demo executable to help them figure out how to get around it.) What followed was 18 months of being unable to read CD's I burnt after that shit was installed on my system. (CD's that worked just fine in every other system.) I eventually found a fix (Use the Starforce removal tools then go into the device manager and choose UNINSTALL for all IDE drives on your system, then reboot).

      I bought Galactic Civilizations purely because Stardock treat their customers decently, and not like thieves. I'm happy to support a developer who has a clue. As for companies like Ubisoft and Codemasters who, when people complain about Starforce, call them pirates and hackers... Fuck them. All companies that use damaging and invasive copy protection deserve to go bankrupt. All they need to do is fire up Emule or a Torrent site and find out just how great the protection they're choosing use is. (Toca Race Driver 3, which used Starforce, was cracked and on the net before it was even released.) They're screwing the genuine consumer and, in some cases, causing damage to these peoples systems.

      They're just as immoral as the pirates.

    8. Re:Wow! by Goldberg's+Pants · · Score: 3, Interesting

      Reminds me of the dongle protection used in Robocop 3 on the Amiga. The head of the company proclaimed that the title would be impossible to pirate. (You can read all about it in an issue of the Amiga diskmag "Grapevine". Somewhere between issue 8 and 17. Sorry, can't be more accurate than that... I know I read it recently.)

      The game called the dongle regularly. It wasn't a protection laid on top, it was woven into the game code. The head guy was saying how damn hard it'd be to crack, and while it may be cracked, it'd take months. You couldn't just remove the calls to the routine to bypass as it was all part of the game itself...

      The game was cracked within days. Rather than strip out the checks, they managed to hack the routine it called so it basically said "The dongle isn't there, but don't worry, just keep running" and that was it... The game was cracked, and yet another failed protection bit the dust.

      And yet the industry appears to have learned nothing. They always say about preventing "casual copying". Does anyone even do that anymore? With broadband and torrents etc... There's not even a need to copy an actual disk anymore. The copies flooding the net show protection does absolutely nothing to stem the flow of warez, so why in the hell do they still bother? I firmly believe that if a game is good, it'll sell. Protection or no protection.

    9. Re:Wow! by Goldberg's+Pants · · Score: 2, Interesting

      Slipped and posted before I was finished...

      Anyway, to add a final line to the above, if a game is good, it'll sell. Protection is there just to protect shitty games.

      The game companies can't have it both ways.

      If you're that convinced copy protection works, then you obviously believe I can't copy the game... So why the fuck can't I return it to the store if it's a pile of shit?

      If they KNOW it doesn't work, then why continue to include. As far as I'm concerned, if a game has copy protection on it, I should be able to return it to wherever I bought it if it doesn't work, sucks etc... But I can't, because I may have copied it...

      Fuck the PC gaming industry. All the doomsayers who say it's dying... God knows it fucking deserves too for the way the majority of it treats all of us.

    10. Re:Wow! by Haeleth · · Score: 2, Insightful

      Unfortunately, the DRM in games often makes it easier to download, patch, and play--no worries about having the right disc on hand, no swapping discs when you switch to another game.

      So I guess you love systems like Steam, then? Download and play, perfectly legally, without even having to worry about finding a crack or trusting the pirates not to have stuck any malware in there.

      As more and more companies catch on and begin to distribute online, the convenience argument will dry up too. I wonder what lines people will use to justify piracy then? I guess it'll be back to the old anti-DRM one: "I don't like the idea of a game that phones home occasionally, even though I have no problem giving out my IP address and full details of all the piracy I'm committing to all kinds of random people on various P2P services."

  3. I disagree by davevt5 · · Score: 4, Interesting

    While the gamer in me rejoices when reading this, the practicality of things are such that copy protection is needed. I agree all attempts to thwart the pirating of games never succeed 100%. But what about the vast majority of people that don't know the intricacies of bitsettings and book types and after toasting a few CDs they give up. Sure, they can get a torrent of the packaged release that circumvents these measures.

    But in the end stopping /some/ piracy will result in more money in their pockets.

    How many more roubles would they get if just 1% of people intending to pirate the game bought it instead?

    ----
    This writing may not necessarily reflect my thoughts and beliefs -- but it probably does.

    1. Re:I disagree by Sycraft-fu · · Score: 4, Insightful

      I dunno, as to if no copy protection can work I suggest you ask Stardock. They seem to have sold a ton of copies of Galactic Civilizations 2, and in fact are still selling it (if you don't have it, buy it, it's great). Do people warez it? Of course but then they warez everything. You show me the most locked down software, I'll show you the crack for it. Yes even things like Cubase 3 which has more code for protection than for program.

      Something you also can't forget is copyprotection software isn't free. Macrovision doesn't had out Safedisc out of the good of their hearts you pay for it, most likely a per disc license. So while you may get some more money from people that can't copy the disc and don't know how to look for a crack online, you'll lose money in having to pay for that protection. You might assume it's more, but have you done a study to see if that's the case? You also have to take in to account what happens if legit users get locked out. Starforce is notorious for not working on legit copies, and for even hosing systems. You end up footing the bill either in terms of patches, refunds, lost business, or all three.

      Either way, it's clear no matter what protection you use, people can and will break it and your game will get warez'd. It's also clear that it is possible to make money on a game with no protection.

    2. Re:I disagree by dgatwood · · Score: 4, Insightful

      You alluded to this with your comment about locked out customers, but that's only one of many problems that copy protection causes. Not only do you as a company pay for the protection, your customers pay for it, too. The only difference is your customers keep paying for it over and over every time something goes wrong with the protection software.

      There are a great many expensive products for which the protection is so buggy that people buy the software, then download the crack and use it because the "protection" contributes so negatively to the overall stability of their computers. Then, there are the apps that start out with the carrot (software authorization), then suddenly give you the stick (telling you "We're not going to give you a software key. If you want to replace your computer, you have to go out and buy a dongle to reauthorize this.")

      I got burned by that once. Never again. Antares, Inc. is now on by absolute do-not-buy blacklist until they change that policy, and I recommend alternatives to their products to anyone who asks me about them. I don't care how good a product they develop. From now on, I won't even look at it. If I've spent several hundred dollars on an app, I expect to be treated better than that, and not forced to spend more money just because the manufacturer has decided that repeated software authorizations are costing them too much money. Life's too short to deal with companies like that.

      The more draconian the copy protection, the more your users flock to alternatives. That's why I now use Digital Performer (no key) instead of Cubase, and Melodyne (software-only key, but only after emailing them to make sure they weren't about to force iLok on me) instead of Auto Tune, and that's why I will never use products by Waves and countless others. I vote with my dollars and purchased software whose authors didn't treat me like a criminal. I will continue to do so and encourage others to do likewise.

      --

      Check out my sci-fi/humor trilogy at PatriotsBooks.

    3. Re:I disagree by slackmaster2000 · · Score: 2

      I actually agree with you, and am glad to see that you were modded up.

      If a copy protection scheme can prevent casual copying which would apply to the vast majority of the players, then it seems like it would be beneficial to the company. I've obtained games illegally and you know, it can be so frustrating and time consuming that it's usually better to just pony up the fifty bucks. It also *feels* wrong to go searching torrent sites loaded with porn links to find games and cracks. If games could be casually copied by simply making a copy of a CD, then it would be trivial for friends to make copies for friends, and it wouldn't feel as wrong to do. Even worse, it would be trivial to distribute ISOs of the game online without downloaders having to jump through any hoops to get it installed and running.

      On the other hand, I don't like copy protection schemes that are invasive. In fact I can't stand them, and for those games that I have legally purchased I will still go looking for cracks to run them. Unfortunately it seems like this is becoming the norm as copy protection schemes try harder and harder to not just prevent casual copying, but all copying, which is a wasted effort that is bad for game companies and consumers both.

      I would also say that it would be nice to be able to make backup media. However this isn't as necessary a requirement as it was back in the floppy days. With reasonable effort, it's not hard to make sure that nothing happens to a CD or DVD for the few months that a person will be playing a game, or even a couple years for a better game. How about a system where the manufacturer will send replacement media for a minimal fee, and/or in exchange for the broken media?

      The one thing that chaps my ass more than anything about this whole copy protection business is that even though all this software has protection, we STILL can't return software to the store. Sure some places will let you, sometimes for a fee, but for the most part software is a no-returns item. So did I rush out and buy Oblivian when it came out, especially having loved Morrowind? Nope, I remember what a hog Morrowind was, so even though my machine was above the minimum requirements, I downloaded a cracked copy from the net to try it out. Guess what? It was unplayable, even at 640x480. Sure I could look around and move a bit, but combat was not possible when framerates would drop to 5 or less. Had I ran out to buy it I would have no recourse other than to ebay it for a loss. I guess I should have tried the demo...oh...wait... Had it run well I would have bought it. I feel the same about music purchasing. If I honestly like something for more than a few listens, I *will* be motivated to buy the actual product, and do so.

      Since I'm blabbering, I might also mention that it can really suck for a family to have to purchase a copy of certain types of games for every computer in the home so that people can play together over the LAN. I'll never forget Total Annihilation and the countless hours I spent playing it with my family. Nor will I forget that only *ONE COPY* of the game was required for everyone to play. Good times.

    4. Re:I disagree by ASkGNet · · Score: 2, Informative

      1) All GalCiv2 patches are freely downloadable now (but require the game to be activated - this is a one-time process)

      2) The Stardock Central application can download and install the game / the patches for you, and also requires a one-time activation.

      I don't see any "enter multiple times" anywhere.

  4. That's the sound of... by TheStonepedo · · Score: 5, Funny

    a joke going right over your head. How can you take seriously an article supposedly on copy protection when it's about the designer of mockeries of real games? The site is a (good) joke, but no comments should be posted with serious thoughts on the ins and outs of copy protection. Enjoy the funny and propose something more interesting than the scratch-n-sniff dongle. The Fast and the Furriest: Drunken Swerve with a breathalysing dongle could prevent copying and unlock new swerve powers and furries for each increase of 0.01% alcohol by volume. Drink up!

    --
    I'll be your candy shop of infinite deliciousity if you'll be my discotheque of endless rump-shaking.
  5. Arg by Deliveranc3 · · Score: 3, Insightful

    Games companies need to stop being so reasonable, I'm going to go broke!

  6. Game On by shoma-san · · Score: 2, Funny

    All my games have been cracked before I even download them.

  7. What the..?! by mugnyte · · Score: 3, Informative

    Heh. Silly me. I was really expecting an account of the state-of-the-art of copyright protection schemes. Y'know, Valve's details, current other mechanisms, etc.

      TFA instead gives a belly-laugh of some strange russian software copyright company. Pardon the ignorance here.

      I guess if I wanted to get a real summary, we go yet again to the Grouptionary.

  8. Simple Solution by alexgieg · · Score: 4, Insightful

    To make sure you'll sell your game, just make sure that the official game packaging is so INCREDIBLE AMAZING AND COOL that the gamer will miss having the experience of owning it. Include a fantastic shining printed manual in full color with high-quality paper (a detailed manual, by the way), a CD whose cover has bright 3D effects, a futuristic or medievalistic box, one or more game character miniatures, coupons with codes allowing a gamer to obtain things he would love (such as game magazine subscriptions, calendars, official strategy guide etc.) at noticeable discounts as well as coupons to access ultra cool sections of the official website, such as, let's say, one where the buyer would be able to register his name and have the chance to win a trip to know the game developers with everything paid, and so on and so forth.

    In short, add value to your official package by offering things a pirate would never be able to provide and people will simply prefer buying from you.

    --
    Conservatism: (n.) love of the existing evils. Liberalism: (n.) desire to substitute new evils for the existing ones.
  9. novahammer is my new nick dammit by gsn · · Score: 3, Interesting

    Funniest damn article I've read in a long time - seriously get to page 3 it gets good.

    The guy has a great point - I've bought a lot of games in recent times, sometimes long time after they were released so that the price goes down (Valve episode 1 price down you bastards - its been out long enough) and they are games I'm rather devoted to. Half-life anything, Jedi Knight and Dark Forces, Quake, C&C, AoE, Duke, Legacy of Kain, Mechwarriors, Wing Commander anything (I want more of the last three and I still hold out hope for DNF!)... its a long list. I'll probably cae on Galactic Civilizations 2 in a bit because I've been told its the games Masters 3 ought to have been.

    There are games I've pirated and deleted, the latest being Prey. Meh. Make your game worthwhile to me and I will buy a copy. I remember when I was in the midst of LoK each game cost more than the last and I still bought them - fricking Defiance was 50 bucks when it came out. It was worth it and I wanted it. The prices have gone up a fair bit so I'm not surprised that piracy has. Especially when a large chunk of your target audience is under 25s and a lot of that is still in school and college earning 6.25 an hour.

    The cd protection is just annoying - fricking cd-keys are such a pain to keep and I hate that I cant legally back up so many of my cds now. I tried reinstalling Diablo last year and was heart broken when the disc had a CRC error all of sudden. I bought the damn game and now I can't play it because some money grubbing bastards at Blizzard were more bothered about their profits than my fair use. Bought it used again but I really ought not to have had to. If they have to have copy protection it'd be nice if game companies just made their games FOSS after a few years because they aren't going to sell it anymore really. Abandonware is a great idea guys!

    --
    Reality must take precedence over public relations, for nature cannot be fooled.
  10. Was Loki Software done in by pirating or... by shoor · · Score: 2, Interesting

    I remember getting some games from Loki Software, and they were not copy protected. I dutifully purchased
    my copies and requested others to purchase also, rather than just burn copies for them (though I made
    backup copies for myself.) But Loki went out of business. I was under the impression that it was
    because too many linux users were pirating their games, but maybe it was just that the linux market
    was too small.

    --
    In theory, theory and practice are the same; in practice they're different. (Yogi Berra & A. Einstein)
  11. Practicality: Copy protection incoveniences users. by Behrooz · · Score: 4, Informative

    The practicality of things is that most copy protection schemes inconvenience legitimate users.

    I hate having to find/switch CDs. I really hate programs which prevent me from even running off of virtual drives so I can image the CDs rather than having to listen to my buzzing CD drive all the time, and I can't stand programs that will not let me legitimately run the game with a legitimate CD in the drive if I have virtual drive software installed on my machine.

    And when I find a form of copy-protection annoying enough, I no longer purchase games which use that method, because it's less effort to warez it than it is to fiddle around with my system to get the copy-protection working.

    So, game publishers: Get with the program. If you release good games which don't inconvenience the user, I'm a potential buyer. Otherwise, the best you can hope for is that I'll check it out with warez and buy the sequel if you've learned your lesson.

    Today's object example:
    Battlefield 2: Copy-protected to some degree, but mainly relying on individual CDkeys to encourage players to purchase for online play, doesn't hassle me about running it off an image, and since I've got my CD key stored securely and everyone I know has the game, I don't have to worry about losing my disks. Excellent game. Total sales to me: $50 + $30 expansion pack.

    Silent Hunter III: Copy-protected with StarForce, known for being nasty and occasionally *damaging DVD drives*. Since they still haven't released an official no-starforce patch for SH3, the only way of getting rid of the Starforce crap is warezing it, so total sales to me = $0. Great game though,and SH4 won't be using StarForce so I'll definitely pick that up when it comes out.

    Galactic Civilizations II: No copy-protection, legitimate purchase provides the option of free access through an online account for new patches/content, no hassle, ongoing support. Total sales to me = $50.
     

    --
    "We have to go forth and crush every world view that doesn't believe in tolerance and free speech." - David Brin
  12. NWN 1 right now has it right by dfloyd888 · · Score: 4, Interesting

    Right now, NWN 1 has piracy protection done right. After patch 1.66, NWN doesn't need the CD. However if you want to play multiplayer online (and possibly automatic update, not sure), you need to have a valid CD key stored on Bioware/Gamespy's servers. Pirated CD key? It gets disabled in their database. Keygens? Yes, they fool the client, but because Bioware's servers have a list of genuine keys, it won't get far when going online.

    This is enough protection to keep 95% of the people from pirating the game. The last 5% will end up finding a crack from somewhere and bypassing it, even if it entails yanking hardware cables to disable physical drives.

    Thumbs up, Bioware.

    1. Re:NWN 1 right now has it right by Sage+Gaspar · · Score: 3, Interesting

      Right now, NWN 1 has piracy protection done right. After patch 1.66, NWN doesn't need the CD. However if you want to play multiplayer online (and possibly automatic update, not sure), you need to have a valid CD key stored on Bioware/Gamespy's servers. Pirated CD key? It gets disabled in their database. Keygens? Yes, they fool the client, but because Bioware's servers have a list of genuine keys, it won't get far when going online.

      That's actually a model more and more companies are using, partially because of the move towards downloadable games instead of retail boxes for convenience on both sides with less distribution overhead. You get a lot more impulse buys that way as well.

      Also, with episodic gaming and subscription models, someone losing their CD means less money for you. I know that back in the day, one of my NWN disks got scratched beyond repair, a new expansion came out, my PW upgraded to the new expansion... if I had my NWN install I would've bought the expansion, but as it was I just let it go and moved on.

    2. Re:NWN 1 right now has it right by eison · · Score: 2, Interesting

      One day, your legitimate key will be disabled, and you'll wonder why you used to argue that it was a good thing for a company to treat their legitimate customers with even less rights than thieves, who are at least innocent until proven guilty.

      --
      is competition good, or is duplication of effort bad?
    3. Re:NWN 1 right now has it right by dfloyd888 · · Score: 2, Insightful

      Of course, copy-protection and DRM assume the buyer is a potential thief. However, a serial number system like the one present in NWN is by far the least of the evils for commercial software protection.

      Game companies have to answer to the suits at the publishers whose first, second, and third concerns are how the fast the game will recoup them money with very little thought to the long haul, and likely no thought to user's systems. So, if a game publisher can get a release out that doesn't install some Draconian copy-protection system, its almost a miracle.

      The NWN serial number and connection to the Gamespy servers offers a lot more than just running the game. It allows you to connect with persistant worlds, provides updates and a way of communication, and the ability to download hundreds of very high quality NWN modules, modules which are commercial quality.

  13. rofl by grindcorefan · · Score: 2, Funny

    who said Germans have no sense of humour ;-)

  14. Windows X64 by TheThiefMaster · · Score: 2, Interesting

    By far the most annoying thing I've found about driver-based copy protection is that not one of them works on windows 64-bit. There are many games that I -have- to crack because otherwise they won't run on my pc at all. A friend of mine mentioned that he has a game that is like this (can't remember the name), but the company making the copy-protection HAS released a 64-bit version that works with 32-bit games, but atari (I think) won't release a patch for the game that includes it, forcing him to crack it anyway.

    Just don't copy-protect games, ok? Microsoft don't stop people copying their disks, in fact the tools for ripping the image to iso, integrating a new service pack and burning it back to disk still bootable are freely available (Microsoft even make disk images downloadable, especially for the MSDNAA).

    Instead make the game either need activating online or only restrict the online play to stop people who are using the same serial key. Don't do anything aggressive either, requiring a reinstall which nukes saves to change to a legally bought key will not encourage people to buy your game.

    All in all, the best games for working on 64 bit edition (imo) are UT2004 (doesn't require the cd after a particular patch and there's a 64-bit version now too), any steam game (hl2 or cs:s etc) again, don't need a cd to play and are 64-bit, any number of mmo games (none that I know of need a cd to play, most don't even need a cd to install).

    Or, I have a suggestion if you really want copy protection: put it in the installer on the cd. Make the installer validate your key and check the authenticity of the disk, then let the installed game run without it. Combine with the "can't play multiplayer with the same key" protection and you'll have a relatively effective protection system that fewer people will complain about. Sure, people will crack the installer eventually, but it will take them longer to crack than the game exe (at least I think so, you'd have to ask a cracker really).