Does Mathematical Tuning Make Games Better?

simoniker writes "What do game designers need to know about statistics? Age Of Empires DS designer Tyler Sigman focuses on statistical topics that he believes should be understood by game designers, in a new article. His reasoning: 'In the game I just finished, we recorded data from play sessions and then set challenge levels in the game based upon the mean and standard deviation values from those recorded data. We set Medium difficulty to be equal to the mean values, Easy difficulty to be equal to the mean minus a certain amount of standard deviations, and then Hard difficulty equal to the mean plus a certain amount of standard deviations.' Would all games be better if they were tuned mathematically?"

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Sims Designer Chris Trottier on Tuned Emergence

[SimHacker]

Sims Designer Chris Trottier on Tuned Emergence and Design by Accretion

The Armchair Empire interviewed Chris Trottier, one of the designers of The Sims and The Sims Online. She touches on some important ideas, including "Tuned Emergence" and "Design by Accretion".

Chris' honest analysis of how and why "the gameplay didn't come together until the months before the ship" is right on the mark, and that's the secret to the success of games like The Sims and SimCity.

The essential element that was missing until the last minute was tuning: The approach to game design that Maxis brought to the table is called "Tuned Emergence" and "Design by Accretion". Before it was tuned, The Sims wasn't missing any structure or content, but it just wasn't balanced yet. But it's OK, because that's how it's supposed to work!

In justifying their approach to The Sims, Maxis had to explain to EA that SimCity 2000 was not fun until 6 weeks before it shipped. But EA was not comfortable with that approach, which went against every rule in their play book. It required Will Wright's tremendous stamina to convince EA not to cancel The Sims, because according to EA's formula, it would never work.

If a game isn't tuned, it's a drag, and you can't stand to play it for an hour. The Sims and SimCity were "designed by accretion": incrementally assembled together out of "a mass of separate components", like a planet forming out of a cloud of dust orbiting around star. They had to reach critical mass first, before they could even start down the road towards "Tuned Emergence", like life finally taking hold on the planet surface. Even then, they weren't fun until they were carefully tuned just before they shipped, like the renaissance of civilization suddenly developing science and technology. Before it was properly tuned, The Sims was called "the toilet game", for the obvious reason that there wasn't much else to do!

Here are some questions and answers from the interview with The Sims designer Chris Trottier:

[...]

Q: On paper, a game where you simulate daily life doesn't sound that interesting. Yet The Sims is really fun to play, so much so that it is now the biggest-selling PC game ever. Although any development team working with Will Wright has to feel confident in the product they are creating, has the unbelievable popularity of the franchise shocked even the development team?

A: Absolutely. When I was first assigned to The Sims, it was not-very-affectionately-known within the company as "the toilet game." Will Wright had tremendous stamina for the risk involved with trying something very new, but there were certainly a lot of head-scratchers both on the team and outside of it. In all honesty, the gameplay didn't start to really come together until a couple of months before ship. Being involved in that tuning process, and seeing the game take shape from what had previously been a mass of separate components, was one of the most powerful experiences of my career.

[...]

Q: What makes The Sims massively popular with female gamers, who traditionally don't make up a big number of gameplayers?

A: It's so hard to answer that question without making broad, sweeping statements that anyone of my gender would probably resent. But... I can say that there are several untraditional forms of gameplay in The Sims. For instance, there are many people who spend most of their time decorating and redecorating their homes. Since there's so much user-created content being posted on websites, they spend a lot of time collecting more looks to add to the game. There are also a lot of people who enjoy having a fantasy life where they get to call the shots... for good or for bad. I've heard a lot of stories