A generic 2D engine for any kind of game
Hungry Hero is an open source Flash game built on Starling Framework.
An extensible development framework for roleplay games.
Open Source Virtual World and MMOG Development Platform
cross-platform 2d game engine
A game engine in java for 2D strategy games
Java game engine for shoot 'em ups, using Java2D.
Cross-platform 2D game engine
AMOS BASIC reimplementation in Java
This game is a 2d arcade game. You can move, jump, kill monster.
A cross-platform Java 2D graphics library using OpenGL.
MOVED: http://github.com/wilkystyle/java2dphysicsengine