Arianne is an engine to develop multiplayer online games like Stendhal
A fun realistic multiplayer free-and-open-source first-person-shooter!
Genealogy software
Game engine allows you to create own MMORPG
3D .NET engine for Windows, Linux, Mac
A 3D game engine in java.
plugin-based RPG manager in C++ and Qt5
Free strategy browsergame engine.
The free and Open Source hockey simulator
Jeu indépendant dédié à l'univers Geek.
3D FPS Digital Paintball 3 Multiplayer Online Game
Library for creating turn-based games with simultaneous moves.
XMICAE is a framework for browser-based IF/RPG narratives.
Develop an emulated Darkfall Online Server.
JavaScript chess with board rotation, pgn output, forward/back & save
Dungeon Master is a RPG/RTS developed on the BYOND engine.
SuperWikia: The Runtime/Realtime Environment for Codesmiths
Browser game engine