@SAMI actually, Unreal 4 has a tileset editor(multi-layered), what makes it a lot easier to create a map, and anyone can make one, if they know how to use basic unreal 4.

@Jelly Jam we'll make no promises. We're working on other projects too, and most of them are paid.
But if we have the support, the inspiration and the time, we're gonna finish it of course!
And if we fail... well, it's in unreal 4, so anybody can continue the development.