RimWorld is the creation of Tynan Sylvester, who was previously a designer for BioShock Infinite. It released in Early Access back in July this year and is already one of the most promising titles in Early Access since Darkest Dungeon.
You take control of a colony of survival attempting to start anew on a strange planet. The game is driven by an A.I storyteller that decides how events happen such as bandit raids and disasters. To survive, you will have to fight, craft, trade, build and gather resources -- all the while tending to your colonists' needs.
That is only scraping the tip of the iceberg when it comes to the depth and content of RimWorld. It is also moddable and is integrated with Steam Workshop, allowing for easy installation of mods to change up the gameplay any time. It may feel pricey for an Early Access title, but its depth and gameplay make it all worth it.