Some options: Ortho: Evokes geometry (orthogonal) while still sounding friendly. Flatter: Slightly silly, and hence accessible/memorable, and evoking Flatland. Probably not a good name if you ever want your engine to expand to 3D. read more
Plus you can have a cool icon. p.s.: Sounds like an awesome engine, please send links when you have them. read more
To explore something new, try Unity's 2D functionality. Unity it self is a great tool, they have added specific 2D functionality to it, moreover they have introduced a new Canvas UI system, which is much more interesting. The tool is great for rapid game development. You'll not require much coding (you might not like it if you love to code). read more
Unity is great product very fast to execute games, but its not open source and not native,its really to much for 2d game . libgbx is great framework but on iOS it not native and slow. i wish some someone will do libgbx-x c++ port . read more