"Metabits are prestige currency. Your entropy and idea production creates metabits. Gain more entropy and idea to produce more metabits. Each metabit will require more entropy and ideas than the last to earn. If your simulation starts to feel slow, restart the simulation." ― Official description in the Reality Engine
Metabits are the prestige currency of Cell to Singularity and are used to upgrade the Reality Engine that runs the simulation. You gain unclaimed Metabits by producing Ideas and Entropy (unclaimed metabits can be used to unlock additional content on the tech tree), which are then claimed and made usable by "rebooting" the simulation. This ability becomes available after buying the first Singularity.
The total amount of Metabits earned is the "simulation level," which passively increases the production multiplier by itself. This is independent of the amount of Metabits on hand, which can be spent in the Reality Engine tree to increase production, click value, or offline production value. You cannot spend Metabits on reality engine upgrades while a simulation is still active. They can only be spent after rebooting the simulation.
The formula for Metabits gained is: (Entropy + Ideas)^(1/3) / 10000 - 1.
The production multiplier gained after a reboot is: (Total Metabits Earned)^(1/3) / 3 - 0.3
Metabit Simulation Levels[]
On the top tab in Primary Simulation, there is a number which shows Metabit Simulation Levels, the number of Metabits you currently have, as following:
| E0 |  0
|
| E1 (Simulation Level 1) | 1 - 9
|
| E2 (Simulation Level 2) | 10 - 99
|
| E3 (Simulation Level 3) | 100 - 999
|
| En (Simulation Level n) | 10ⁿ - (10ⁿ⁺¹)-1
|
| Currencies | |
|---|---|
| Premium |  Darwinium (for Boosts, Double Earnings, Recharge of Nanobots, Data Geodes, Traits, Mutagen, Galactic Nursery and Dark Matter)
|
| Reality Engine | Metabits
|
| Augmentations Console |  Logits (for Cosmetic, Sounds and Artifacts)
|
| Primary Simulation |  Entropy (for Life and mainly Evolutions) •  Ideas (for Civilization and mainly Technology) • Metabits (unlock Mammals)
|
| Mesozoic Valley |  Fossil (for Dinosaurs, Trophy) •  Mutagen (for Traits, Rare, Epic)
|
| Beyond |  Stardust (for Celestial Bodies, Interstellar Objects) •  Dark Matter (for Traits, Rare, Epic) •  Constellation Fragments (for Constellations)
|
| Exploration - James Webb Telescope |  Honeycomb Mirrors
|
| Exploration - Fungi |  Toadstools
|
| Exploration - Philosophy |  Questions
|
| Exploration - Mass Extinction |  Species (alternate appearance:  Trilobites •  Placoderms •  Tetrapods •  Archosaurs •  Tyrannosaurus Rex •  Homo Sapiens •  Unknown Species)
|
| Exploration - Money |  Labor (alternate appearance:  Cowrie Shells) •  Coinage •  Banknotes •  Credit (alternate appearance:  Cryptocurrency)
|
| Exploration - Pollination |  Pollen (alternate appearance:  Crops)
|
| Exploration - Deep Sea Life |  Nutrients
|
| Exploration - Tea |  Tea Leaves •  Tea Cups
|
| Exploration - Music |  Music Notes •  Songs
|
| Exploration - Human Body |  Deoxygenated Blood •  Oxygenated Blood
|
| Exploration - Visual Art |  Creativity
|
| Exploration - Outbreaks |  Contagions •  Immunity
|
| Exploration - Cats |  Paws
|
| Exploration - Rocks |  Minerals •  Rocks •  Crystals
|
| Exploration - Cryptids |  Torches
|
| Exploration - Mathematics |  Real Numbers •  Imaginary Numbers
|
| Exploration - Artificial Intelligence |  Circuits (alternate appearance:  Nodes)
|
| Exploration - Cheese |  Milk •  Cheese
|