Free strategy browsergame engine.
Little game background framework in java.
A very small multi-platform game engine for creating desktop games.
also download updates from files section
C-Lesh is a game programming language for 2D games.
CM Game Development Kit
Portable game engine with main focus on point-and-click adventures
A mobile tower 3D tower defense/defend the flag game
JavaScript framework to build game engines, games, emulators and apps
A game engine written in the D programming language
DiaT is a Textadventure
An extensible game engine that targets RPGs.