RimWorld is a sci-fi colony sim driven by an intelligent AI storyteller. Inspired by Dwarf Fortress, Firefly, and Dune. Build in the forest, desert, jungle, tundra, and more. Watch colonists develop and break relationships with family members. Fight pirates, tribes, mad animals, giant insects and ancient killing machines. Craft structures, weapons, and apparel from metal, wood, stone, cloth, and futuristic materials. Tame and train cute pets, productive farm animals, and deadly attack beasts. Trade with passing ships and caravans. Form caravans to complete quests, trade, attack other factions, or migrate your whole colony. Capture refugees or prisoners and turn them to your side or sell them into slavery.