MAME Android Emulator.
A cross-platform 2D game engine
Character animation system for games and simulations.
Free and Open Game Programming Language for Windows and GNU/Linux
A lightweight, fast and extensible game server for Minecraft
Real-time RPG for PC/tablet/phone; multiple quests and random dungeons
God game: wage war from the stone age to the future
Most elegant 2048 puzzle with game fields 4x4 8x8 16x16 for Windows
Blueshift is a cross-platform 3D game engine implemented in C++
Portable game engine with main focus on point-and-click adventures
Build Cross-platform Applications
Android port of PRIME roguelike
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
A cross-platform interpreter for many point-and-click adventure games
The Atomic Game Engine is a multi-platform 2D and 3D engine
A unique Matching Pairs game with fruits and number pairs Memory Game
Realtime 3D engine for game development
Remake of the classic Caesar III game
Open-source, cross-platform, C++ game engine for creating 2D/3D games
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
plugin-based RPG manager in C++ and Qt5
Open Game Bootstrap
Paintown is a 2d fighting game engine.