How PC Game Modders Are Evolving
Lanxon writes "Wired has a lengthy investigation into the state of PC game mods, and the amateurs keeping the scene exciting in the wake of draconian DRM placed on many PC titles by major studios. It highlights a number of creative modders, such as Scott Reismanis, founder and editor of Mod DB, and his community-driven alternative to Valve's Steam — Desura — which is 'a distribution system, and, like Steam, will sell games and champion indie titles. But the way it handles mods makes it even more exciting.'"
Source SDK absolutely. Get him a copy of TF2, which will come with Valve's Hammer software. Valve are quite supportive of their community and highlight the best new community maps on their tf2 blog. There are also DVDs in valve's shop on how to create maps.
I am amused no one mentioned Doom here, it is definitely a stepstone in game modding.
True that most of that modding came after source ports were made, but making a Doom mod is a process that takes relatively little time, and has potentially good results with not much effort.
There are mods that, using ACS scripting (a few kilobytes of human-readable code), change Doom gameplay radically. There are bigger mods such as ZDoom Wars (combining FPS + strategy) or All Out War 2: The Second Coming (a team based mod heavily inspired by C&C:Renegade) that put the fun levels up enough to make them "games on their own right" while running on the Doom engine.
Current games never feel as easy to mod as Doom was, even games fully designed to be modded. Just the requirement of 3D modeling limits the possibilities for many potential modders. You can literally make fully featured and beautiful maps/mods in 24 hours.
(And, despite kids in general being annoying in games, at times... give an annoying kid a very easy to mod game, and you might be surprised with the results. I only saw such a thing in Doom...and perhaps Dwarf Fortress)