Here is a guide on how you can change the map size in RimWorld Odyssey and which size is best for your playthrough.

RimWorld Odyssey is a game where you get to experience a nomadic journey to the stars. You can discover various planets and biomes, giving you plenty of options to set up settlements. Needless to say, the world is your canvas. With that said, one of the key aspects of the game is the map size. Depending on what you plan to do, you might need a smaller or bigger world layout.
Sometimes, the map size can affect your game’s performance. Here is a guide on how you can change the map size in RimWorld Odyssey.
Understanding Map Size in RimWorld Odyssey

In RimWorld Odyssey, map size is determined at the time of world/map generation, specifically where your gravship lands. Once you’re on a tile, the size is fixed for that location. This means it cannot be changed mid-colony. Here is a quick rundown of the map size categories in RimWorld:
- 200×200 (Small)
- 250 × 250 (Medium, Default)
- 300 × 300 (Large)
- Beyond 300 (Manual Config or Mods)
If you don’t change anything, the game will follow the default map size.
How To Change Map Size in RimWold Odyssey

There are multiple ways to change your map size in the game:
- World Creation: Head to the Advanced Options before starting a new game.
- Game Mods: You can install third-party mods or use a map designer to customize your map size. However, check the version and see if it’s compatible with your version of the game.
- Edit Via XML: If you’re a tech-savvy gamer, you can try and access the game’s XML files. You only need to change the “defaultMapSize” section of the ModSettings XML file in the game’s directory. Be warned that this can break your game if you set it too high.
Can You Change Map Size During Playthrough?
Unfortunately, there is no way to change the map size in RimWorld Odyssey mid-playthrough. Once you generate the map, there is no way to expand it. However, if you use mods, the changes will only reflect the next map you generate.
Best Map Size To Play

Typically, you should avoid maps that are too big. This can cause massive performance issues. This is why the most advisable size is 250×250, which is the default. If you want the best performance, you can go for smaller maps like 200×200. However, your building space is limited, and you won’t be able to get as much salvage in these maps. If you are confident with your hardware, go for larger map sizes like the 300×300 to get more salvage and space to build. However, keep in mind that this will require a beefy PC setup.
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