Embark is a colony management game with a focus on complex simulation in a huge living 3D world. It is a game targeted at enthusiasts of the genre who are looking for a deeper experience. While a lot of effort has been put into the interface, and there is a short tutorial, there is still a significant learning curve (especially while in Early Access).

Order your colonists to build the ultimate base in multiple Z levels.
Manage your colonists' needs.
Watch your colonists live their own lives and have their own relationships.
Build aqueducts and pumps to manage a detailed water simulation system.
Farm food with a detailed plant simulation system.
Tame and hunt animals.
Craft dozens of different items to keep your colonists happy and defend yourself.
Dig deep to find sources of metal ore with a prospecting system.
Explore the massive game map.
Defend your colony with a detailed combat system.
Play a procedurally generated map with different biomes and places of interest each time.
Each component of an item has a material and quality which affects the item differently.
Impress or fight with other factions.
Trade with other factions.