I couldn't end this list without including Kenshi. The world of Kenshi is one of the biggest non-infinite worlds since the Elder Scrolls II: Daggerfall. It has a staggering 870 square kilometers for you to explore. You can be a trader, thief, warlord, farmer, adventurer and more.
To survive the harsh world, you will need to construct and base and gather together a squad. There are no heroes; each character is equal and has their own story to tell. As a character gets stronger, so too does their physical appearance.
You can join or oppose the various factions throughout the game. You will have to use realistic methods of healing injuries and carrying the injured to safety. Much like RimWorld, this is only the tip of the iceberg for what the game has to offer.
It truly is an outstanding and in-depth game that comes from a small indie developer. If you like playing games with massive and harsh realistic worlds full of danger but want something a bit different, then Kenshi is worth checking out.