i hope not

I dont know another game engine easy to use like Superpowers that uses 3D.

Well you can still use it for make game like i do but if you expect uptade of the engine :  it's no update in sight.

The engine is still free, open-source and easy to use throught. 

For myself i still use it but i think execept for fast browser's games, he's not the one you should bet on.