It's a cheeky little space commander game (not really sure how to describe). Its actually pretty fun, but much like 99% of all mobile games you have to use real world currency to buy currency in game that is used to speed up construction. But, it isn't pay to win at all, in fact, all paying real money gets you is upgrades quicker. Nothing exclusive, so it's nice.

Only like 75k people play it, so odds are one of you plays it.