GemRB is a portable open-source implementation of the Infinity Engine
Orx: Portable Game Engine
A free 3d game for PC that does not limit the player. Fight,Build,Gain
functions for 2D/3D graphics + realistic driving simulation
A cross platform Lua based game engine
scriptable game engine with built-in support for 2D graphics and sound
The ultimate 2D side scrolling engine. NOTE: Moved to GitHUB
3D urban environment renderer : browser-app ; as well as a GTA clone
plugin-based RPG manager in C++ and Qt5
An advanced flexible game engine for Java.
A traditional top-down OpenGL car racing game
Amber Crux is a 2D graphical adventure game.
A 2D Adventure Game & Engine