RPG Maker 2000/2003 and EasyRPG games interpreter
Haskell game engine library for roguelike dungeon crawlers
A modern, cross-platform Quake game engine based on FitzQuake.
A conservative source port of Heretic that is identical to DOS
A conservative source port of Hexen that is identical to DOS
Game engine for playing tomb raider 1 - 5 levels.
C++11 cross-platform game engine using SDL2
C++ OpenSource Game Fabric based on SDL2