Terra asteroid guide: start, resources and example seeds

• Every early need sits inside the start biome: Algae for the Oxygen Diffuser, dirt and water for the Microbe Musher, Mealwood seeds for the first farm.
• Water is everywhere. All three sample seeds below place a Cool Steam Vent within 60 cells of the Printing Pod, and the ocean always carries a Salt Water Geyser.
• Mild temperatures. The sandstone, marsh and ocean biomes sit near room temperature, so heat is a mid-game problem, not a cycle-10 problem.
• The tundra is guaranteed to hold Anti Entropy Thermo-Nullifier units, the strongest cooling a young colony can get without power.
• Oil, natural gas and hydrogen all spawn on the same asteroid, so every classic power chain is available without rockets.

• Slime marshes ring the start. Slime and Polluted Oxygen carry slimelung germs; dig into them only behind an airlock or a door you keep closed.
• The caustic jungle is hot and full of Chlorine Gas and Polluted Oxygen. Its heat leaks into the base if you leave the walls open.
• Good metal veins sit away from the start. Copper ore is close; iron and gold amalgam mostly sit in the outer biomes.
• The generic geyser rolls vary a lot. Some seeds give two water geysers, others give none, so read your seed before you plan a water economy.

1. Cycle 1: dig a small living space inside the sandstone, build a Research Station and queue Basic Farming and Power Regulation.
2. Cycle 1 to 3: an Outhouse and a Wash Basin next to it, then a Oxygen Diffuser fed with the algae from the start biome.
3. Cycle 2 to 5: a Manual Generator, a Battery and a Microbe Musher. Mush Bars buy time until the farm is up.
4. Cycle 5 to 15: Mealwood on Farm Tile fed with dirt, then a second food that needs no dirt, such as Bristle Blossom on water.
5. Cycle 10 to 30: tame the nearest Cool Steam Vent or water source and switch oxygen to an Electrolyzer before the algae runs out.
6. Cycle 30 to 60: ranch Hatch for coal and meat, build a Coal Generator on that coal, and wall off the jungle and marsh with insulated tiles.

Terra rarely kills a colony through a missing resource. Colonies on Terra die of three things: food that runs out around cycle 20, slimelung from an open marsh, and heat that creeps in from the jungle and the machines. Plant twice what you think three Duplicants eat, keep one closed door between the base and every marsh, and put the Electrolyzer and generators in a separate room you can cool later.

Leave the Anti Entropy Thermo-Nullifier units in the tundra where they are until you have power to spare. Each one runs on hydrogen and deletes heat, which makes the tundra the natural place for an industrial brick or a steam turbine loop once the colony needs one.

A water-rich roll. Eight liquid sources add up to more than 18 kg/s on average, far more than a colony of twenty needs: Water Geyser and Salt Water Geyser twice each, Cool Steam Vent twice, one Polluted Water Vent and one Cool Slush Geyser.

The closest target is the Cool Steam Vent 50 cells above the Printing Pod at (103, 238); cap it and condense its steam for the electrolyzer. The Iron Volcano at (50, 132) is the long-term metal source; it sits 56 cells down and to the left, close enough to tame with a steam turbine room.

For power, the Natural Gas Geyser at (111, 127) and its twin at (210, 145) each feed roughly one Natural Gas Generator on average.

This seed trades liquid water for gases. Its liquid comes from one Salt Water Geyser and three Cool Steam Vents, while the gas list is long: Hydrogen Vent twice, Hot Polluted Oxygen Vent twice and one Infectious Polluted Oxygen Vent.

The Hydrogen Vent at (172, 168) is only 57 cells from the Printing Pod: cool it and feed a Hydrogen Generator for a steady early power source. The Cool Steam Vent 62 cells above the pod at (120, 260) is the water target.

The Gold Volcano at (32, 234) gives gold, and a Leaky Oil Fissure at (177, 70) leaks crude oil in the oil field 128 cells down.

The best start of the three for water: a Cool Steam Vent sits 32 cells above and to the right of the Printing Pod at (157, 224) and averages 1.7 kg/s. Three more Cool Steam Vents follow, plus one Water Geyser and one Salt Water Geyser.

The catch is chlorine. The Chlorine Gas Vent rolled three times on this seed, and the one at (91, 154) is 55 cells from the pod. Keep the rooms on that side sealed until you have an Deodorizer or a pump to remove the gas.

Natural gas sits 55 cells straight below the pod at (133, 137) for an early Natural Gas Generator.

The Spaced Out! Terra Asteroid is slightly smaller, adds wasteland and uranium pockets, and holds a teleporter that sends Duplicants to the Radioactive Swamp Asteroid. The game treats it as the same Ideal start. Read the Radioactive Swamp Asteroid guide before the first teleport.

In Spaced Out! the starmap sets your long-term plan: the teleporter target gives early access to radiation and new metals, and the outer moonlets hold the resources Terra lacks.

Once food, oxygen and power run on their own, Terra rewards expansion in rings. Tame the steam and water geysers into a central water network, cool the industry with the tundra's AETNs, then go down to the oil field for Crude Oil, Oil Refinery and plastics. The magma core and any metal volcano on your seed finish the base game's needs: steel, power from a Steam Turbine and rocket fuel.