Game engines

Source 20 Games
Spring0 Games
Starling Framework0 Games
Stencyl0 Games
Autodesk Stingray (Bitsquid)0 Games
StepMania0 Games
Stratagus0 Games
Stride0 Games
Three.js0 Games
TOSHI0 Games
Truevision3D0 Games
Torque3D0 Games
Turbulenz0 Games
Twine0 Games
UbiArt Framework0 Games
Unigine0 Games
V-Play Game Engine0 Games
Vengeance Engine0 Games
Vicarious Visions Alchemy0 Games
Vicious Engine0 Games
Under development