Note 2007-05-16: Everything in this section is heavily out of date. My interest in game creation systems was highest in 2001/2, and most of the text dates back to this time. Since then I've updated it less and less. Some of the systems and engines described here haven't been supported for quite a while or may not even be available any more. Others have followed but found no entry here.
I know that's a shame since interest in this kind of thing is generally high, and some of these pages still get an awful lot of hits in spite of their tattered state. Once I've added the 1000th game (I'm not far off, you know), I'll look into this. For now, I can only apologize and appeal to your patience.
A game maker is an authoring tool for creating computer games. There are general game makers not specialized for a certain type of game, like Mark Overmars' Game Maker, and specialized ones, like RPG Maker 2000 and O.H.R.RPG.C.E. for console RPGs or M.U.G.E.N. for fighters. All the game makers discussed here are primarily for creating 2D games.
Creating 3D games is very different from creating 2D games. There are many 3D engines available, some of them include authoring tools. I have included DarkBASIC here, even though it's for 2D as well as 3D games.