HTML5 Canvas Tower Building Game
LayaAir is an open-source 2D/3D engine
Free, open source game engine online
2D Game Engine
The imaginary eight-bit machine
Built to be ease of use, with no programming knowledge, Multi-platform
C-Lesh is a game programming language for 2D games.
fiftyfifty is a programming language and game
Free MMORPG Engine. Develop and host graphical browser-based games.