Colonize the New World.
A modern, cross-platform Quake game engine based on FitzQuake.
Good-looking and addictive OpenSource games
A cross-platform port of Hexen II game.
3D Engine c++
C64/Amiga emulator with PAL shader and runAhead
GemRB is a portable open-source implementation of the Infinity Engine
4X Space Strategy Game
Multiplatform MIDI File Player for Linux, Windows, and macOS
Retro style, multi-platform soccer game
A MUD client for Android, iOS, Linux, Mac OS X and Windows
A 2D scrolling platform shooter, inspired by Duke Nukem 1
Arianne is an engine to develop multiplayer online games like Stendhal