RimWorld is a sci-fi colony simulator blending Strategy and Simulation genres, released in 2018. You manage survivors on a frontier world, focusing on complex needs, relationships, and individual health while building a base. Its core feature is an AI Storyteller that dynamically generates challenges—like raids or disasters—ensuring emergent, unique narratives each playthrough. Gameplay involves resource management, crafting, and tactical combat across diverse, procedurally generated biomes.
The simulation is extensive, covering areas such as:
Combat is handled through deeply simulated small-team engagements, incorporating both ranged gunplay and melee fighting mechanics.
The central feature driving the experience is an intelligent, adaptive AI Storyteller. This system dictates the flow of events, ensuring that no two playthroughs are ever the same. Instead of following a fixed narrative path, the AI dynamically generates challenges—such as pirate raids, tribal attacks, animal rampages, or the sudden appearance of ancient mechanical threats—based on the current state and success of your colony. This creates a personalized, emergent narrative driven by simulation rather than pre-scripted events.
Players are not locked into one environment. The game generates entirely new worlds for each playthrough, offering diverse biomes ranging from scorching deserts and dense jungles to frozen tundras. Each biome presents unique environmental challenges and native flora and fauna that must be accounted for in colony planning.
This title is classified as a Real Time Strategy (RTS), Simulator, and Strategy Indie game. It was officially released on October 17, 2018, and is available on Linux, PC (Microsoft Windows), and Mac platforms.
The core experience is supplemented by additional content, including 2 major expansions and 3 downloadable content (DLC) packs, which introduce new mechanics, biomes, and challenges to the established simulation framework.
simulation game in which survivors of space refugees survive on new planets *realistic violence expression - realistic representation of weapons and blood in combat process *indirect drug expression - indirect expressions of drugs such as smoking and drinking exist , thus determining the classification as '15 years old' in accordance with article 21 of the act on the promotion of the gaming industry and article 7,3 of the classification regulations.
High impact themes and drug use

Explore exotic biomes, expand your mobile colony, and launch into space. Scavenge ancient tech on asteroids, abandoned space stations, and satellites. Find and defeat the mechanoid lair.

Darkness stirs on the rim. Survive flesh infestations, cultist attacks, shambling undead, blood rains, invisible hunters, and other sanity-shredding perils. Capture and study entities to harness the power of the void. Conduct psychic rituals and awaken an evil machine god.

With Biotech, colonists (and outsiders) can become pregnant and give birth. Pregnancy can begin naturally, or via technological means, and can be controlled by a variety of methods. Babies bring joy, but also challenges. Colonists’ hearts will melt when the baby coos and giggles in their arms. But it takes effort to keep a baby happy and healthy and loved - create a safe haven for them in a cozy pastel nursery where there is always warm milk, a comfortable crib, overflowing toy chests and kind caregivers.

A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.

What do you believe? RimWorld - Ideology adds belief systems to the game. Play as piratical nudist cannibals, blind undergrounder mole people, charitable ranching cowboys, machine-obsessed transhumanists, and many more.

The expansion includes a new system for nobles and titles, psychic powers, mechanoid combat structures, quests and rituals, luxurious palaces, Imperial technology, and new music from Alistair Lindsay.

A popular music mod for RimWorld, which adds a set of 56 additional fanmade music tracks to the game.