Anno's slightly wonkier cousin. It's nice for a while, but gets a bit annoying later on because of some non-intuitive restrictions on what you can build and farm on each island, so at first you try to manage supply chains and then give up and let all items criss-cross everywhere. Interestingly enough, this city builder has a bit of a problem with its ending - space whales are attacking regularly but rarely over the course of your session, and you can build a super-intensive planet-wide energy shield which is pretty cool, or you just build a whale charmer and the game is won. It's not bad, but I'd just say to play Anno (1701) instead and ignore its war mechanics.