A cross-platform OpenGL based lightweight scenegraph library
Megalui: 2D/3D OpenGL & C/C++ Library for Scientific Visualizations
PGN Viewer Oslo to load PGN chess notations from flat text file
A free Python 3 text-based MUD game server
Classic Text-Based RPG
3d peer to peer chatroom where associated pairs of text gravitate
WarNards is an advanced version of backgammon.
A lame multi-user dungeon engine.
A Game written entirely using Scripting languages(No Compiling)
MKEngine is a game engine for Text-Based games.
Text Game C++ Battle Command
A cross-platform Java 2D graphics library using OpenGL.
Multi-user whiteboard emphasizing simplicity.