Gamestudio/lite-C (Freeware - Version 1.10 - ~20 MB - Dec 2007)
Free lightweight language with C syntax and A7 engine, by Conitec and Atari, Inc. Create 2D and 3D games with only a few lines of code. Native support of sounds, movies, models, 3D effects, physics engine. The free version can create stand-alone applications for educational and non-commercial purposes. Free model/terrain editor included.