CTFs as you need them
Arianne is an engine to develop multiplayer online games like Stendhal
JavaScript framework to build game engines, games, emulators and apps
Cross-platform reimplementation of AMOS BASIC (runtime)
Fully fledged steam community SDK
Investigo - DX9 Performance and Debugging Toolkit
Create your own online real-time browser-based MMO in your website
A generic C++ MUD server featuring a strategy-style hexagon map