World generation

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Basics Menus Game Creation Gameplay Pawns Plants Resources Gear Mods Gameplay Menu Caravan Combat Cover Drafting Environment Events Factions Firefighting Quality Quests Research Rooms Time Trade

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Basics

Worlds in RimWorld are generated from either random or user-provided seeds that allow for a completely new experience every time. Each world is uniquely filled with multiple biomes that change what the world looks like and how it behaves. For example, some biomes feature a large amount of mountains, while others are full of grasslands.

Worlds may be named by the player, are arranged in a grid of locations, and come in many different sizes:

150x112

200x150

250x188

300x225

350x262

400x300

Every square on a world is unique, with its own biome, elevation, average temperature, terrain, and rainfall amount. A colony can be built on one square. World size has no affect on game performance, as the world is simply used as a seed.

The following controls are used on the World generation menu:

Controls
LMB	Select location
RMB	Clear selection
MMB	Pan (click+hold)

In world generation 4 main features of the world are generated with each tile and can be seen with the various modes of the map. Each feature, biome, elevation, temperature, and rainfall, are logical with the tiles near to them. Each feature goes along with the biome of the tiles and the tiles around it. Each biome has its unique trees, animals, temperatures, rainfall and growing periods.

Biomes

There are 9 biomes in Rimworld, and on a normally generated world, all of them are represented. They each correspond to specific features. Each biome is more likely to include certain features based on it's real world equivalent.

Ice Sheet

The ice sheet is represented with a light blue. It is extremely cold with a growing season of never. This biome is located in the northern region of the map and is impossible to settle in. The game will not allow you to settle in this area.

Tundra

The tundra is located in the Northern part of the map. It has a very cold temperature and is arguably the most difficult are to settle in. The growing season ranges from never to the latter half of the year.