Anomaly expansion and update 1.5 out now!

Posted April 11th, 2024 by Tia Young

New horror-themed expansion now available! Plus free content in update 1.5

The RimWorld – Anomaly expansion is out now!

We’re celebrating Anomaly’s release with a sale on all previous RimWorld releases: Get 20% off RimWorld and 10% off the BiotechIdeology, and Royalty expansions!


RimWorld’s free update 1.5 is out now! This update adds a ton of content, improvements, and fixes. Read about it here or check out the full changelog here.


We’ve also released the RimWorld – Anomaly Soundtrack which contains 11 tracks of awesome ghoulish tunes by RimWorld composer Alistair Lindsay.


  • Unmodded savegames from 1.4 will load in 1.5.
  • If you want to keep playing on version 1.4, use Steam beta branch “version-1.4.3901“. To do this, right-click RimWorld in the Steam library, go to properties, open the betas tab, and select the version from the dropdown.
  • A large number of mods have already been updated to version 1.5 by our amazing modders. However, some mods are not yet updated and won’t work on 1.5.


We want to hear all about the horrifying adventures, so share them with us on Reddit!

If you need to report a bug, please join the RimWorld official development Discord.

Anomaly is available in the following languages: English, German, French, Japanese, Korean, Polish, Russian, Latin Spanish, Simplified Chinese, and Traditional Chinese.

We covered a lot of Anomaly’s content in our preview blog posts, but you can also go in blind and avoid all spoilers!

Thank you to everyone for supporting RimWorld over the years – the community, modders, translators, artists, volunteer testers, team members, and developers have all helped make Anomaly happen. I wanted to make something new and creative this time around, and we can’t wait to see what you think.

Have fun!

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