Banished - As always, Email support (at) shiningrocksoftware (dot) com if you have any issues. This will likely be the last update of Banished, except for any major bug fixes. The OSX and Linux versions development has stopped, and won't be released.
OpenTTD - An open-source clone of the classic game ...
RimWorld - RimWorld - A sci-fi colony sim driven by an intelligent AI storyteller.
Micropolis - Micropolis is the open source version of SimCity Classic from Maxis, developed by Will Wright and Don Hopkins.
Dwarf Fortress - Dwarf Fortress is a single-player fantasy game with two modes: fortress and adventure.
Simutrans - Simutrans is an open-source transport simulator.