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A sci-fi colony sim driven by an intelligent AI storyteller.
A sci-fi colony sim driven by an intelligent AI storyteller.
9,498 backers pledged $268,132 to help bring this project to life.

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RimWorld Alpha 12 - Animal Taming released

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Animal taming is here! You can now tame animals, milk them, eat them, and train them into whirling furry/scaly death machines! We’ve also added codified room roles and statistics (like room wealth and room impressiveness), new traits, animals, threats, items, bonuses, bugfixes, and bugs. A full change list is in the full post on ludeon.com.

How to upgrade: If you own the game, you can get the new version by re-downloading from the link you used before (it is a permanent link and always has the newest version). You should also get an update email from us. Anyone still having trouble should start at the support page which includes an automatic link sender tool and our support email. There may be a delay of some hours before your download count resets or your email arrives.

Also note that this build will not load old saved games or old worlds, so please don’t try to load these in the new version. They’ll probably just crash the game.

Alpha 11 - Sappers and Traps released

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It’s here! This update includes clever new AI strategies including sappers who blast and dig around your defences and raiders who burn crops. I’ve also added a number of incidents, including several long-term atmospheric conditions like volcanic winter and toxic fallout. There is also an array of new traps for players to use, dozens of other new features and hundreds of fixes and small improvements. A full change list is at the end of this post on the Ludeon blog.

If you own the game, you can get Alpha 11 by re-downloading from the link you used before (it is a permanent link and always has the newest version). You should also get an update email from us. Anyone still having trouble should start at this thread. There may be a delay of some hours before your download count resets or your email arrives. 

Also note that this build will not load old savegames or old worlds, so please don’t try to load these in the new version. They’ll probably just crash the game.

Alpha 10 - Joy System released

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Alpha 10 has arrived! This time we’ve added a new "joy" need with a bunch of ways to fulfil it, new timetable, outfits, and thing filter management tools, and dozens of smaller improvements. A full change list is viewable on the Ludeon blog.

If you own the game, you can get Alpha 10 by re-downloading from the link you used before (it is a permanent link and always has the newest version). You should also get an update email from us. Anyone still having trouble should start at this thread. There may be a delay of some hours before your download count resets or your email arrives. 

Also note that this build will not load old savegames or old worlds, so please don't try to load these in the new version. They'll probably just crash the game. 

RimWorld Alpha 9 - Tales 'o' Drinking released

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Alpha 9 is out! This time we’ve added alcohol, drunkness, binges, hangovers, multiple sculpture types with generated art based on historical events, personal shields for melee fighters, and dozens of smaller improvements. A full change list is at the end of this post.
 
If you own the game, you can get Alpha 9 by re-downloading from the link you used before (it is a permanent link and always has the newest version). You should also get an update email from us. Anyone still having trouble should start at this thread.

Also note that this build will not load old savegames, so keep your old install separate if you want to finish an Alpha 8 colony.

Change list:

Alcohol
  • Added hops growing, beer brewing, beer drinking, inebriated thoughts and ability impacts
  • Added special 'binge' mental breaks
  • Added teetotaler and chemical fascination traits
  • Added hangovers

Tales and art

  • There are now three tiers of sculpture: small, large, and grand. Grand sculptures are 2x2 cells.
  • Sculptures now have generated descriptions of what they depict.
  • Sculptures will depict events that happened earlier in a colony's life, include: killings, drunkenness,vomiting, landing in drop pods, artwork created, struck ore, person captured, person recruited, animal hunted, surgery done, someone was on fire, someone went psychotic, someone gave up
  • High-quality weapons have art engraved into them.
  • All weapons now have quality levels, including guns and bows.

Age

  • Old characters now appear at a low but regular rate.
  • Old characters have gray hair and tend to have age-related illnesses (cataracts, bad back) which reduce their effectiveness.
  • Old characters tend to spawn with higher skills.
  • Since people don't age in cryptosleep, characters now have both chronolotical age and biological age. Even animals and mechanoids have ages.
  • Dates are now relative to specific years. The game starts in 5500.

New stuff

  • Personal shields added. These one-person shields block a certain amount of damage from ranged attacks and also prevent shooting out. Great for melee fighters.
  • Artillery shells are now needed by artillery cannons. Shells on the ground can explode.
  • Siegers will come with shells to use to bombard you.
  • Shells can be crafted at the machining table.
  • Added deterioration: items left outside for a very long time will deteriorate and eventually crumble away.
  • Surgery can fail now, sometimes catastrophically. Failure chance is related to the surgeon's medical skill and the quality of the medicine.
  • You can now rescue incapacitated neutral people and heal them. Their faction will be appreciative.
  • Guns now have quality levels which affect accuracy.
  • Added Heavy SMG
  • Added psychic foil helmet
  • Added corn and rice crops.
  • Vomiting: Some diseases, drunkenness, cryptosleep sickness, and hangovers now cause people to vomit.
  • People can now get food poisoning. Bad cooks are more likely to accidentally poison meals.
  • Game now records total real playtime per colony.
  • Added 'pause on load game' option.
  • Many new sound effects from Alistair Lindsay for UI, work, and combat.

Misc improvements

  • Deep optimization on various systems - especially AI. This should make big colonies run much more smoothly.
  • Added bad thought for wearing tattered clothes.
  • Apparel becomes damaged when owner dies from violence.
  • Apparel actually takes the damage it absorbs as armor.
  • Apparel wears out over very long periods of use.
  • Uranium ore now appears as a minable natural rock.
  • Colonists will now go to extinguish nearby fires even if someone else is already coming to do it.
  • Cryptosleep caskets are now sealed, come with warnings, and can contain deadly ancient defenders.
  • Reworked the ‘do until you have X’ option on bills; it now works for more bills and shows the number you currently have.
  • Eating now takes priority even over emergency work (doctoring, firefighting) if a colonist is starving.
  • Colonists, when hauling to stockpiles, always haul the max amount they can carry, and drop the extra nearby if the target cell can’t hold it all.
  • Reworked ship takeoff sequence into a proper whiteout with nice credits.
  • Player can no longer magically toggle power on any item. Rather, you designate power to be toggled and the colonists go do it.
  • Temperature now equalizes through both walls and roof/floor.
  • Lengthened day from 20,000 to 24,000 ticks. Shortened month to 12 days.
  • Reworked auto-tutor to rely more on passive alerts and less on in-your-face interrupting modal dialogs.
  • Colonists are now bothered by people walking around inside the room while they sleep.
  • People newly woken from cryptosleep have cryptosleep sickness for a while.
  • Wind varies over time (not just with weather changes), and so will the power output of wind turbines.
  • Fonts are now nicely antialiased.
  • Tons of other refinements, rebalancings, and bugfixes.

Alpha 8 - Winter is Coming released

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Alpha 8 is out! This time we've added a seasonal cycle and temperature simulation, snow, two more biomes (boreal forest and tundra) with all the attached animals, art sculpting, crafted item quality, weapon and apparel crafting, home-grown medicine, wind turbines, and more.

If you own the game, you can get Alpha 8 by re-downloading from the link you used before (it is a permanent link and always has the newest version). You should also get an update email from us. Anyone still having trouble should start at this thread.

Also note that this build will not load old savegames, so keep your old install separate if you want to finish an Alpha 7 colony.

 Change summary below:

Temperature and seasons

  • Certain clothing can protect against temperature discomfort/harm.
  • Temperature changes daily and on a yearly cycle according to where you are on the planet. There are distinct seasons.
  • There are special heat wave/cold snap events.
  • Added heater and cooler buildings.
  • Food spoils. This can be slowed or prevented with refrigeration.
  • Snow falls and accumulates over winter. It slows down movement.
  • Snow can be cleared manually, and will melt if heated.
  • New apparel: Parka and tuque.
  • Added new biomes: boreal forest and tundra.
  • A new temperature system tracks temperatures indoors and outdoors.
  • Characters can get hypothermia, frostbite, heatstroke, or burns from being in extreme-temperature areas.

Art and crafting

  • Sculptures and melee weapons have a quality. Quality is influenced by crafter skill and affects beauty and damage.
  • Apparel crafting now allows crafting any kind of apparel.
  • Can now craft any kind of melee weapon from appropriate materials.
  • Created 'unfinished thing' step to crafting. Crafting can now take several days per item (as in the case of advanced weapons or art).
  • Added art trading.
  • Sculptor's table added. Colonists can create abstract sculptures.

New content

  • New plants: pine tree, birch tree, moss, xerigium
  • Xerigium plants can be farmed and refined into herbal medicine.
  • New power plant: wind turbine.
  • New weapons: triple rocket launcher, doomsday rocket launcher.
  • New items: Glitterworld medicine, herbal medicine.
  • Alphabeaver event creates alphabeavers who will consume trees until stopped.
  • Ancient cryptosleep shrines now generate on the map. Open the cryptosleep caskets if you dare - the occupants may not be friendly.
  • Economy and trader stock generation reworked and rebalanced from the ground up.Stats inspector allows inspecting more things in more places, and provides more, clearer info.
  • Several new songs from Alistair Lindsay.
  • You can now release prisoners. This gains you goodwill from their faction.
  • You can now configure your keyboard hotkeys.
  • Dozens of other fixes and improvements.
  • New animals: elk, hare