Frozen Forest Asteroid guide: the cold forest moonlet and example seeds
AsteroidsMedium
How to run the cold forest moonlet start, with in-game seeds and every geyser located.
The Frozen Forest is the cold forest moonlet start: a 128 × 153 cell asteroid whose forest start sits among frozen rust and frozen jungle biomes, above a layer of solid magma. The game rates its cluster, Moonlet Cluster - Frozen Forest, Moderate. Arbor Trees, Mealwood, Oxyferns and Pips grow in the start; Wheezewort (Wheezeworts) grow in the cold biomes around it.

| Fact | Value |
|---|---|
| Size | 128 × 153 cells |
| Survival chance | Moderate |
| Where you find it | Start asteroid of Moonlet Cluster - Frozen Forest; a non-start Frozen Forest Asteroid sits in the other moonlet clusters. |
| Starting biome | Cold forest: Arbor Trees, Mealwood, Hexalent, Mirth Leaf, Oxyfern, Pips and Shine Bugs, with two or three cold forest water pockets. |
| Other biomes | Three or more frozen rust biomes, three or more frozen jungles, a layer of solid magma and a small magma core. |
| Guaranteed | A Chlorine Gas Vent, a Cool Slush Geyser, a crashed satellite, a Gravitas director's room and a teleporter pair to the Desolands moonlet. |
| Peak light and radiation | 30,000 lux of sunlight and 187 rads of cosmic radiation at the surface. |
Strengths
- Wood and oxygen from the start biome: 14 to 18 Arbor Trees and Oxyferns on the sample seeds.
- Cold all around: Wheezeworts, brine ice and the frozen biomes give cooling without machines.
- Rust, 700 to 900 tonnes, plus iron ore and some Aluminum Ore.
- A Cool Slush Geyser on every seed, within 54 cells of the pod on all three samples.
Weaknesses
- Chlorine: one guaranteed vent within 48 cells of the pod on every sample seed, and seed 909090 rolled a second one plus a hot polluted oxygen vent.
- Little sand and sandstone, so Hatch food and filter material are scarce.
- Cold farms: Mealwood stops below 10 ºC, so the first farm needs a warm room.
What to target first
- Cycle 1: Research Station, Outhouse, Mealwood on the forest dirt.
- Cycle 1 to 5: protect the Oxyferns and add a Oxygen Diffuser if algae is close.
- Cycle 3 to 10: tap the Cool Slush Geyser; filter its polluted water before drinking.
- Cycle 10 to 30: Arbor Trees and a Wood Burner for power; seal the chlorine vent.
- Cycle 20 onward: the teleporter to the The Desolands Asteroid for oil and steam.
Surviving the Frozen Forest
The start is mild; the danger is the cold around it and the chlorine vent. Keep bedrooms and farms warm with machine heat, insulate them from the frozen biomes, and seal the chlorine vent before the gas reaches the base.
Seed M-FRZ-C-1234567-0-0-0
Medium Boulders. A Minor Volcano sits 28 cells to the left of the pod at (28, 66), and the Cool Slush Geyser 34 cells below at (50, 39).
A Salt Water Geyser 48 cells away at (96, 48) averages 4.0 kg/s, the strongest water source in this guide.


| Geyser | Cell (x, y) | Average output | Temperature |
|---|---|---|---|
| Salt Water Geyser | 96, 48 | 4.04 kg/s | 95 ºC |
| Cool Slush Geyser | 50, 39 | 1.09 kg/s | -10 ºC |
| Minor Volcano | 28, 66 | 625 g/s | 1727 ºC |
| Chlorine Gas Vent | 14, 49 | 103 g/s | 60 ºC |
| Carbon Dioxide Vent | 102, 80 | 79 g/s | 500 ºC |
Seed M-FRZ-C-55555-0-0-0
Volcanic Activity and Frozen Friend. Two Volcano rolls at (14, 77) and (103, 41), both within 51 cells, and a Liquid Sulfur Geyser 30 cells away. The hottest Frozen Forest of the three.


| Geyser | Cell (x, y) | Average output | Temperature |
|---|---|---|---|
| Liquid Sulfur Geyser | 80, 48 | 1.70 kg/s | 165 ºC |
| Volcano | 14, 77 | 1.32 kg/s | 1727 ºC |
| Cool Slush Geyser | 101, 108 | 1.22 kg/s | -10 ºC |
| Volcano | 103, 41 | 1.20 kg/s | 1727 ºC |
| Carbon Dioxide Geyser | 85, 94 | 153 g/s | -55 ºC |
| Chlorine Gas Vent | 100, 66 | 116 g/s | 60 ºC |
| Carbon Dioxide Vent | 95, 91 | 102 g/s | 500 ºC |
Seed M-FRZ-C-909090-0-0-0
Medium Boulders and Metal Rich: about 870 tonnes of iron ore. The Cool Slush Geyser is 30 cells away at (83, 83), but two Chlorine Gas Vent vents and a Hot Polluted Oxygen Vent sit within 43 cells.


| Geyser | Cell (x, y) | Average output | Temperature |
|---|---|---|---|
| Cool Slush Geyser | 83, 83 | 1.28 kg/s | -10 ºC |
| Carbon Dioxide Geyser | 25, 60 | 193 g/s | -55 ºC |
| Chlorine Gas Vent | 24, 42 | 111 g/s | 60 ºC |
| Chlorine Gas Vent | 75, 33 | 108 g/s | 60 ºC |
| Hot Polluted Oxygen Vent | 90, 59 | 106 g/s | 500 ºC |
As a rocket target: seed M-BAD-C-1234567-0-0-0
The non-start Frozen Forest in the Desolands cluster, three hexes away: Crashed Satellites, a Natural Gas Geyser, a Hydrogen Vent, a Minor Volcano and a Cool Slush Geyser. As a rocket target it is a wood, power and cooling outpost.

| Geyser | Cell (x, y) | Average output | Temperature |
|---|---|---|---|
| Cool Slush Geyser | 23, 52 | 1.38 kg/s | -10 ºC |
| Minor Volcano | 41, 47 | 705 g/s | 1727 ºC |
| Hydrogen Vent | 53, 32 | 136 g/s | 500 ºC |
| Natural Gas Geyser | 90, 33 | 122 g/s | 150 ºC |
| Chlorine Gas Vent | 66, 47 | 101 g/s | 60 ºC |
Long-term plan
The Frozen Forest grows into a wood and cooling colony. Arbor Trees feed ethanol and the wood burner, the cold biomes cool industry for free, and the Desolands at the end of the teleporter supplies oil.