A cross-platform 2D game engine
Clojure in Unity
Planimeter Game Engine 2D - LÖVE-based game engine for Lua
Game engine for playing tomb raider 1 - 5 levels.
scriptable game engine with built-in support for 2D graphics and sound
A mobile game distributed server implemented using netty4.X
online 4X browser game engine
Multi-platform game engine similar to old Megaman with a stage editor
A generic 2D engine for any kind of game
2D physics engine for games
C++ Text Adventure Engine
A Simple Game Engine
A truly extensible cross-platform game engine
Open source, moddable game engine for the "Polygon Love 2" game
Javascript adventure game engine
Scripting language of the hawk game engine
cross-platform 2d game engine
Browser game engine
SDL game engine made for Ludum Dare 24