[SomeCallMeTim]

Cross-platform development of games is trivial (C/C++ and OpenGL work on all of them).

Cross-platform development with PhoneGap or similar is also trivial, and isn't hard to make work on (almost) all devices.

[notastartup]

I have been looking at Intel XDK, I think it hits my pain points.

PhoneGap I'm not so sure about because people seem to be walking away from it and writing native applications instead because they were frustrated by performance. Now, I'm sure there's success story.