RimWorld Mods

Stuff Mass Matters Mod

Author of the Stuff Mass Matters Mod: mlie

Stuff Mass Matters Mod adjusts item weight based on the material they are made from, fixing the oddity where different stuff has different mass but the resulting items all weigh the same. With this mod, material choice finally matters for carry weight and movement penalties.

Stuff Mass Matters Features

  • Modifies item mass depending on the stuff used to craft it.
  • Heavy materials like uranium result in heavier items than light materials such as bamboo.
  • Plasteel equipment allows pawns to carry more on caravan journeys.
  • Calculates base mass using the highest-commonality stuff category an item can be made from.
  • Applies relative mass differences based on the actual stuff used.
  • Affects all stuff-based items, mostly apparel, with some weapons and buildings included.
  • Optional setting to scale negative movement speed penalties by item weight.
  • Does not modify positive movement speed bonuses.
  • Pairs well with the companion mod Change Stuff Properties to customize material values.


Do you like this mod?

Show your support to the author by donating a small amount
Hm, you're using an ad blocker...

We get it, ads are not what you’re here for. But ads help us keep the lights on. We deliver up-to-date mods, guides and plenty of RimWorld content at no cost to you. So, please, add us to your ad blocker’s whitelist to continue browsing the RimWorld Base. 

Please whitelist us on your ad blocker and

Get a lifetime ad-free experience with the purchase of any RimWorld merchandise from our store. 

Still seeing this message after making a purchase? Click here to fix it

Get your RimWorld T-Shirt!

Dress in RimWorld style. For you or your loved ones!