Orx: Data-Driven Game Engine
Gaming library
Open Game Bootstrap
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Gives agents personality, moods, emotions and emotional attachments.
A generic 2D engine for any kind of game
Scriptable frontend for media applications.
Open Source Virtual World and MMOG Development Platform
This game is a 2d arcade game. You can move, jump, kill monster.