Some neat games that you may not have heard of:

Flotsam - The world has drowned, and everything is underwater. Your task is to help a handful of Drifters build a floating town around a tugboat, using scrap you find in the water and on what remains of the land, and then rescue others.

Project Hospital - A very satisfying-to-play hospital building and management game, with quite a bit more depth than most games in the 'hospital tycoon' genre, and a rather unusual artstyle.

Airport CEO - Design and run your own airport. Gameplay mechanics are more or less what you would expect from a game of this type, but the building system just felt so *nice* to work with that I keep coming back to it, even though there isn't a lot of variation in things to build. Also lets you schedule the flights yourself.

Software Inc. - You build up a software (and hardware!) company in the early days of home computing, with a frankly absurd amount of simulation depth and mechanics. Also a very satisfying building system - it feels a bit like The Sims, but far more responsive.

Galacticare - Also a hospital management game, with more shallow gameplay this time; but also with a lot of soul and funny writing!

STATIONflow - You're responsible for laying out a metro station in the most efficient configuration. Surprisingly challenging!

SimCasino - Again a management game, a casino this time. But with a lot more content and gameplay than you might expect, and a building system that feels quite good.

Uncle Chop's Rocket Shop - It's like a service manual simulator; you are a spaceship mechanic, and you'll have to carefully consult an extensive in-game manual to complete your repairs correctly and in time. Funny writing, neat and very tactile gameplay, time pressure optional, though note that there is a roguelite mechanic that a lot of people seem to dislike the implementation of.

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