Another multi-platform banger! Most of the game is building resource extractors, processors, conveyors, and sorters. There are tower defense elements, but there's usually a long interval where you are expanding your base as you see fit.
Soundtrack is pretty good. It is very open source. Seems to be lots of mods and multi-player servers available, though I had plenty of fun with all the single-player missions. I played on the tablet, controls were pretty good, painting build locations on the screen.
