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URAN.png Uranium
Section Radioactive
Spawn temperature 52°C
Heat Conductivity 100%
Relative weight 90
Gravity 0.4
Acid dissolve rate 0%
Flammability 0
State Powder
Misc properties
Radioactive, harmful to STKM
Source code

A nuclear reaction byproduct that heats up quickly under pressure.


Excluding obvious ways, such as by brush or CLNE, URAN can be created in a variety of ways:

  • By PLUT.png fission;
  • By PROT.png collisions at high velocity;
  • By molten ROCK.png, with 1/312500 frequency, while under 100+ pressure and at least 4726.85C.


The temperature of URAN for the next frame is calculated by the formula T+p(T/2000), where p is the pressure and T is the current temperature. However, when the pressure is negative, URAN does not cool down.

Because of its heating properties, URAN is used a lot in nuclear reactors all across the game. The combination of URAN and BOYL is used widely because hot BOYL makes a lot of pressure and pressurised URAN makes a lot of heat, which results in a positive feedback loop.

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