I've decided to go with a city builder (hopefully I don't abandon it 24 hours in like I did in LD49 lol) but this time with the twist it's happening on a sphere instead of a normal 2d grid. I was able to write a shader in Unity that can warp a 3D model to fit the exact footprint of the tile. This way I can (hopefully) avoid the alignment artifacts one would normally run into when tiling a sphere.