With games like Little Big Planet, Garrys Mod, and now Project Spark I think we will start getting more questions making games using these games. I've never played little big planet so I don't know how in-depth it is, but the whole "game" of Project Spark (which I do play) is making games and will definitely raise some questions on "how to do X".
I see a some of meta threads about this already but those are specific to parts of a game (example minecraft computercraft coding)
This is also my first meta question so feel free to tear it apart, heh.