We talked a little about Surviving Mars in the "What are you playing" thread and most people had heard that it had crappy documentation and refused to try it until that was fixed. Just to let you know, the latest patch features a decent five part tutorial that tells you everything you need to know to get started with your colony. I played through it myself and if it had existed when I first started playing I wouldn't have had to watch YouTube tutorials. If you decide to try it just accept the default settings on your first game. They select a sponsor and commander that give you a lot of benefits to make your first colony more likely to succeed. Oh, and pick an easy landing spot with lots of resources and not too high a disaster rating. Expect to crash and burn a few times anyway but that's half the fun.
I remember we had some talk about this somewhere (Discord maybe?) but the consensus then was sort of meh. Steam reviews are still Mixed but it's on sale for $24 and I haven't played a good city builder in forever. I probably shouldn't buy it, since I'm going to be working 14 hour shifts 7 days a week for the next month, but... is it fun?
It's.. okay. The big problems with it are that it just isn't that deep of a game and is incredibly easy, even if you turn on some of the difficulty-enhancing options and select a hard starting area. Once you get the basic supply chain going there is almost zero difficulty left and you're just going through the motions. There are some fun moments to be had, and if you're looking for a more casual builder then it can be a decent choice.