The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Animation Compression Library
Ze Text Adventure game Builder : Create as you play !
A free 3D game engine to create games and realtimes scenes for Windows
Blueshift is a cross-platform 3D game engine implemented in C++
Real-time RPG for PC/tablet/phone; multiple quests and random dungeons
Portable game engine with main focus on point-and-click adventures
creator : Nikola Lukic about : Visual JS 2d canvas multiplatform game
Point-and-click 2D game engine