- LÖVE: http://love2d.org (Lua)
- Polycode: http://polycode.org (Lua / C++)
- SpriteKit (Obj-C / Swift)
(almost engines)
- Cinder: http://libcinder.org (C++)
- Processing: http://www.processing.org and http://www.processingjs.org (Java/JS)
- NodeBox: http://www.nodebox.net (Python)
- PyGame: http://pygame.org (Python)
- LÖVE: http://love2d.org (Lua)
- Polycode: http://polycode.org (Lua / C++)
- SpriteKit (Obj-C / Swift)
(almost engines)
- Cinder: http://libcinder.org (C++)
- Processing: http://www.processing.org and http://www.processingjs.org (Java/JS)
- NodeBox: http://www.nodebox.net (Python)
- PyGame: http://pygame.org (Python)