Boreal forest
Boreal forest
Forests of coniferous trees. Despite the harsh winters, boreal forests sustain a diverse population of small and large animals, and have warm summers.
Base Stats
- Type
- Biome
- Texture on World Map
- Allows colonies
- Yes
- Allows Roads and Rivers
- Yes
- Animal Density
- 2.8
- Plant Density
- 0.4
- Disease MTB Days
- 60 days
- Movement Difficulty
- 1[Note]
- Forageability
- 75%
- Wild Plant Regrow Days
- 25 days
- Min Temperature
- -10 °C (14 °F)
- Max Temperature
- N/A
- Rainfall range
- 600mm – 65535mm
- Swampiness range
- N/A
- Max Fish Population
- 500
- Clear
- 18
- Fog
- 1
- Rain
- 2
- Foggy rain
- 1
- Dry Thunderstorm
- 1
- Rainy Thunderstorm
- 1
- Soft snow
- 4
- Hard snow
- 4
- Gray Pall
- 1
- Overcast
- 1
- Blizzard
- 1
- Torrential rain
- 1
Boreal forest is a moderately cold biome in RimWorld.
Summary[edit]
A colder version of the temperate forest, but warmer and significantly more populated than a tundra.
In the lists below the number in brackets represents the relative commonality.
Flora[edit]
Berry bush (0.16)
Birch tree (1.5)
Brambles (2)
Bush (3)
Grass (9)
Moss (4)
Pine tree (5)
Poplar tree (1.2)
Wild healroot (0.16)
Gray grass 
(9)
Gray pine tree (4)
Ripthorn (4)
Bulrush (0.2)
Reeds (1)
Fauna[edit]
Arctic fox (0.07)
Arctic wolf (0.07)
Caribou (0.5)
Cougar (0.07)
Deer (0.5)
Elk (0.5)
Grizzly bear (0.07)
Hare (1)
Horse (0.15)
Ibex (0.5)
Lynx (0.07)
Megasloth (0.1)
Muffalo (0.5)
Raccoon (0.5)
Rat (1)
Red fox (0.07)
Squirrel (1)
Timber wolf (0.07)
Turkey (0.5)
Warg (0.07)
Wild boar (0.5)
Yak (0.12)
Badger (0.2)
Crow (0.5)
Greatwolf (0.02)
Heron (0.2)
Mink (0.2)
Moose (0.2)
Porcupine (0.2)
Sparrow (0.5)
Swan (0.1)
Wolverine (0.07)
Additionally, these animals can spawn in coastal maps:
If the map is polluted, then the game may choose to spawn in wild animals from this list instead:
Diseases[edit]
Boreal Forest has a disease MTB of 60 days. The following diseases can occur in a Boreal Forest:
| Disease | Commonality |
|---|---|
| Flu | 100 |
| Plague | 100 |
| Gut worms | 50 |
| Fibrous mechanites | 30 |
| Sensory mechanites | 30 |
| Muscle parasites | 50 |
| Animal flu | 100 |
| Animal plague | 100 |
| Organ decay | 10 |
Fish[edit]
 |
This section relates to content added by Odyssey (DLC). Please note that it will not be present without the DLC enabled. |
The table below contains the list of all of the fish that can be caught - as well as where they can be caught.
| Fish | Water body | Rarity |
|---|---|---|
| Salmon | Freshwater | Common |
| Frostfish | Freshwater | Uncommon |
| Salmon | Saltwater | Common |
| Cod | Saltwater | Common |
| Dogfish | Saltwater | Uncommon |
Analysis[edit]
Boreal forest is a step up in difficulty from temperate forest, but not much harder overall. The growing season will be shorter, meaning more food will need to be produced and stored in the early game, there are less animals and plants, and winters will be colder, but gameplay is otherwise similar to temperature forest.
- Growing: Moderate - Growing seasons are shorter, but soil is plentiful and warmer boreal forests can have growing seasons of 30 days.
- Disease: Easy - Diseases happen less frequently than in warm biomes, and wild healroot grows naturally. Medicine may run dry during the winter if not enough is grown or bought.
- Temperature: Moderate - The temperature can reach dangerous levels during the winter or cold snaps. Heat waves may occur during warmer tiles in the summer, but are fairly rare.
- Fires: Easy-Moderate - There are plenty of trees and wild plants around to catch fire, but less than a temperate or tropical biome.
- Predators: Moderate - Animals in general are less common than in warm biomes, but predators are still common and are more likely to get hungry during the winter.
Overall starting difficulty is moderate, with the main challenge coming from the short growing season, thus forcing early game colonies to prepare food, cloth, and medicine in advance. Once greenhouses are established so that the colony can grow crops year-round, the difficulty is similar to most other biomes, with less disease than warm biomes, but winters forcing colder clothing.
Gallery[edit]
A Boreal Forest
Boreal Forest's texture on the world map
Version history[edit]
- 0.8.657 - Added
- Temperate
- Temperate forest • Temperate swamp • Scarlands
- Hot
- Tropical rainforest • Tropical swamp • Arid shrubland • Desert • Extreme desert • Glowforest • Grassland • Lava field
- Cold
- Boreal forest • Cold bog • Tundra • Ice sheet • Sea ice • Glacial plain • Orbit
- Water
- Lake • Ocean
- Pocket map
- Underground • Labyrinth • Metal hell • Undercave • Insect lair