Out of interest, what would be the single hardest aspect of coding this? And what about a cheap knockoff version, where the edges wrap horizontally or vertically (but it isn't truly spherical).
How impossible would it be to support fully spherical game maps, like planets in miniture. This would allow for attacking from any direction (just go around the world) sending things into orbit etc. And no more borders! Disclaimer: the above suggestion may be impossible, already beaten to death or j...