Most 2D games are often rendered in a 3D world anyway. So that you can get cool transitions or concepts like distance much more easily. Unity3D is still the de

Most 2D games are often rendered in a 3D world anyway. So that you can get cool transitions or concepts like distance much more easily. Unity3D is still the defacto for most gaming studios and I agree with the first point that the game engine space is very saturated. Still I admire all the work and great 2D engines can render faster on specific hardware (cocos2D was a good example)! I say focus on one niche and build better integrated tools for that niche.