LÖVE

Proposals for implementation:
1. The code editor (C illuminated and so on ...)
2. Focusing effects for images (Blur Vertical, Addtive and so distant ...)
3. Behavior for objects (Turning behavior (constantly spinning object), the physical behavior (instead of the usual physical objects will give the physical behavior), and so on ...)

Flesh out specific features you want, and then submit them to the issue tracker.