If you're on macOS (soon on Linux too) and you'd like to create 2d and 3d interactive applications for several platforms, this might be of interest...
Truly "write once, run everywhere", the framework targets OpenGL 2.1 (desktop), GLES2 (mobile) and WebGL1 (web). It provides very simple while powerful constructs to produce 2d and 3d content.
Version 1.0.0 has just been released: