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Deuterium is the scarcest of the three main resources, and its production depends on the planet’s temperature. The colder the planet, the more deuterium it has. Let’s take a look at how this works and which planets are more profitable. The numbers are taken from the game’s code.
Where do these numbers come from? The orbital temperatures and the deuterium bonus formula are taken directly from the game engine. The tips for choosing planets come from the community. The planets themselves can be found in the encyclopedia at.
Cold planets produce more deuterium
The deuterium synthesizer operates more efficiently the lower the planet's temperature is. This is built into the engine: a temperature multiplier is applied to deuterium production.
The rule in simple terms:
The colder a planet is (the lower its temperature), the higher the bonus to deuterium production. On warm planets (where the temperature is above zero), there is no bonus.
Examples of bonuses based on a planet's maximum temperature:
| The Planet's Temperature | Deuterium Bonus |
|---|---|
| +100 °C and above | No bonus |
| 0 °C | No bonus |
| −100 °C | approximately +15% |
| −200 °C | approximately +31% |
| −275 °C (the coldest) | approximately +43% |
In other words, on the coldest planet, nearly one and a half times as much deuterium is produced as on a neutral one.
Temperature depends on the orbit
A planet's temperature is determined by its position in the system (its orbit). There are eight groups of orbits in total—from the hottest inner ones to the coldest outer ones:
| Orbit | Approximate temperature |
|---|---|
| 1 (nearby, hot) | +225…+275 °C |
| 2 | +150…+225 °C |
| 3 | +75…+150 °C |
| 4 | 0…+75 °C |
| 5 | −75…0 °C |
| 6 | −150…−75 °C |
| 7 | −225…−150 °C |
| 8 (far, cold) | −275…−225 °C |
The inner orbits are hot, while the outer ones are icy. Therefore, the distant, cold planets (orbits 6–8) are favorable for deuterium.
The Other Side: Satellites and Fields
Cold, distant planets have some drawbacks that are worth considering:
- Moons orbiting cold, distant planets provide little energy (they are more efficient around hot, nearby planets—where the moon is closer to the star).
- The size of the planet (the number of buildable tiles) does not depend on the orbit in this game—tiles are generated randomly (approximately 200–270) on any orbit, so the assumption that “cold = small” is incorrect here.
Therefore, a cold planet is a “deuterium base” with an emphasis on a power plant rather than satellites, while a hot, nearby planet—on the contrary—is well-suited for satellites and solar energy.
How to Apply This
- For deuterium, choose cold, distant planets (with orbits closer to 8)—your yield will be significantly higher.
- On a cold planet, go with a solar or thermal power plant rather than satellites.
- Leave the hot inner planets to the energy sector along with their moons.
- How to Balance Energy and Resource Extraction — in the article “Resource Extraction and Energy”].
Frequently Asked Questions
Why do cold planets produce more deuterium? The deuterium synthesizer is more efficient the lower the planet's temperature is. On warm planets (where the temperature is above zero), there is no bonus.
What is the deuterium bonus on the coldest planets? At a temperature of about −275 °C on the planet, the bonus is approximately +43%. For comparison: at −100 °C, it is about +15%, and at −200 °C, it is about +31%.
Which orbits are favorable for deuterium? Far, cold orbits (6–8). There are only eight groups of orbits: near, hot orbits and far, icy orbits.
Is it true that a cold planet is always small? No. The size of the planet (the number of fields) does not depend on its orbit—the fields appear randomly, with approximately 200–270 on any given orbit.
What to Read Next
- Resource Extraction and Energy
- [](/knowledge/encyclopedia/planets)'s Planets in the Encyclopedia
- How to Develop the Economy
