Radioactive Terrabog Asteroid guide: Aridio's teleporter world

AsteroidsMedium2026-10-19

Sandstone, swamp and frozen slush behind the Aridio teleporter, with in-game seeds.

The Radioactive Terrabog Asteroid is the teleporter world of the Aridio Cluster: 160 × 176 cells of sandstone, a swamp, three or more slushy tundras, three to five coaly granite barrens, radioactive biomes, uranium fields and a frozen core. The game calls it fairly dry and sandy, with swampy areas and a partially frozen surface. For the hot Aridio start it is the cold side of the cluster: ice, slush and Sleet Wheat.

Fact	Value
Size	160 × 176 cells
Where you find it	The Aridio Cluster, three hexes from the start; reached through the start teleporter or by rocket.
Arrival	A Duplicant teleporter from the start asteroid lands here next to a supply teleporter pair, with boon rooms (bedroom, washroom, power, kitchen, well or farm) on most seeds.
Biomes	Sandstone arrival area and sandstone, one swamp, slushy tundras, coaly granite barrens, three or more radioactive biomes, uranium fields, frozen uranium fields and a frozen core.
Guaranteed	Carbon Dioxide Geysers in the uranium fields, and rolls from metal volcanoes, water vents and gas vents.
Peak light and radiation	35,000 lux of sunlight and 125 rads of cosmic radiation at the surface.
World traits	Always exactly two random traits.

Strengths

Cold: 1,800 to 2,000 tonnes of Ice plus brine ice and polluted ice, and Liquid Carbon Dioxide Geysers.
Sleet Wheat (Sleet Wheat), Bog Buckets, Mellow Mallows and Mealwood in the wild.
Coal in the granite barrens and Beeta hives in the radioactive biomes.

Weaknesses

Radioactive biomes and extremely cold uranium fields.
A slimy polluted oxygen vent rolled on both sample seeds, and a chlorine vent on one.

What to target first after landing

Teleport over and use the boon rooms.
Ship ice back through the supply teleporter to cool the Aridio base.
Plant Sleet Wheat in a cold room for a second grain.
Mine coal for early power at the outpost.

Surviving the asteroid

Treat the Terrabog as Aridio's cooling reserve. Keep the outpost on the sandstone side and avoid the uranium fields without protection.

Seed V-HTFST-C-1234567-0-0-0

Medium Boulders and Volcanic Activity: five Volcano rolls on the left side, a Iron Volcano, and water from a Water Geyser at (17, 36) with 3.5 kg/s, a Polluted Water Vent, a Cool Steam Vent and both slush geysers.

Geyser	Cell (x, y)	Average output	Temperature
Water Geyser	17, 36	3.52 kg/s	95 ºC
Polluted Water Vent	97, 81	3.21 kg/s	30 ºC
Cool Salt Slush Geyser	126, 117	1.71 kg/s	-10 ºC
Cool Steam Vent	133, 79	1.63 kg/s	110 ºC
Cool Slush Geyser	49, 115	1.29 kg/s	-10 ºC
Volcano	37, 79	1.16 kg/s	1727 ºC
Volcano	7, 70	1.12 kg/s	1727 ºC
Volcano	31, 56	1.09 kg/s	1727 ºC
Volcano	85, 44	1.06 kg/s	1727 ºC
Volcano	25, 71	905 g/s	1727 ºC
Iron Volcano	105, 54	369 g/s	2527 ºC
Carbon Dioxide Geyser	52, 19	151 g/s	-55 ºC
Chlorine Gas Vent	131, 97	148 g/s	60 ºC
Carbon Dioxide Geyser	102, 27	133 g/s	-55 ºC
Infectious Polluted Oxygen Vent	151, 11	95 g/s	60 ºC

Seed V-HTFST-C-2468024-0-0-0

Geodes and Crashed Satellites: three slush geysers, a Cool Steam Vent at (99, 44), a Cobalt Volcano, a Aluminum Volcano and a Liquid Sulfur Geyser. A Infectious Polluted Oxygen Vent at (36, 89) is the vent to seal.

Geyser	Cell (x, y)	Average output	Temperature
Cool Steam Vent	99, 44	1.72 kg/s	110 ºC
Liquid Sulfur Geyser	112, 33	1.69 kg/s	165 ºC
Cool Salt Slush Geyser	23, 124	1.68 kg/s	-10 ºC
Cool Slush Geyser	142, 129	1.58 kg/s	-10 ºC
Cool Salt Slush Geyser	141, 105	1.46 kg/s	-10 ºC
Cobalt Volcano	69, 33	275 g/s	2227 ºC
Aluminum Volcano	114, 64	240 g/s	1727 ºC
Carbon Dioxide Geyser	129, 27	158 g/s	-55 ºC
Carbon Dioxide Geyser	30, 13	156 g/s	-55 ºC
Infectious Polluted Oxygen Vent	36, 89	106 g/s	60 ºC

Role in the colony

The Radioactive Terrabog Asteroid makes the Aridio Cluster playable in the long run: ice and cold crops from here offset the heat of the start.