OpenRCT - open source implementation of the classic roller coaster tycoon games but recently rewritten in C and that comes with a few improvements from better game saves to bigger maps. There is also online multiplayer so you can build a park with your friends.
…a priest, an imam(or guru/monk–etc) and a rabbit walk into a hospital. I’m a Type-A says the priest, AB says the Imam, rabbit looks around and says… I think i’m a typo.