Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
LIKO-12 is an open source fantasy computer made using LÖVE
2D Game Engine
Planimeter Game Engine 2D - LÖVE-based game engine for Lua
Game engine for playing tomb raider 1 - 5 levels.
Fallout 4 Configurator
Log and Play Retro Controller Inputs
A Simple Game Engine
Fast and easy-to-use pathfinding library for grid-based games
A GUI Level Editor for the Enigma Game
RPG Games without coding!
Chronicles of Stingard, a RPG that is being developed for Garry's Mod