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Games like Fission Simulator

Fission Simulator. These games share the most with it, and each one says why.

Only
  1. Fundamental cover art

    Fundamental

    Also physics, pure numbers

    Start with a single particle and build up the universe. Galaxy's most-played game by total hours, by a lot.

    4.4★ galaxy
    65% idle
  2. Incremental Mass Rewritten cover art

    Incremental Mass RewrittenDormant

    Also pure numbers, physics

    Gain mass, become a black hole, then an atom, then a supernova. The numbers get absurd quickly and never stop.

    4.4★ galaxy
    60% idle
  3. Distance Incremental cover art

    Distance Incremental

    Also pure numbers, physics

    Go faster, go further. Rockets, time reversal and a very long list of layers from the Prestige Tree author.

    4.4★ galaxy
    55% idle
  4. Universal Reconstruction cover art

    Universal Reconstruction

    Also science, physics

    Stranded in a void with one skyrmion, you gather and combine components to rebuild reality. A Profectus remake inspired by Distance Incremental.

    3.9★ galaxy
  5. Idle Research cover art

    Idle Research

    Also science, pure numbers

    Research and craft flasks and tubes to generate three kinds of energy, with several prestige types, fights, skills and potion brewing.

    85% steam
    50% idle
  6. Particle Clicker cover art

    Particle ClickerDormant

    Also science, physics

    Run a physics lab and work through the history of high energy particle physics by clicking to collect data.

  7. Incremental Mass: Classic ReloadedDormant

    Also pure numbers, physics

    A reloaded version of the classic Incremental Mass, where you grow your mass through layered resets.

  8. Infinite Eater cover art

    Infinite EaterDormant

    Also pure numbers, physics

    Eat things smaller than you to grow and eat bigger things, in an incremental take on agar.io and Tasty Planet.

  9. Antimatter Dimensions cover art

    Antimatter DimensionsUpdated

    Also pure numbers

    Buy dimensions that buy dimensions, then break infinity, then break reality. The reference point every numbers-go-up game is measured against, and it has a real ending.

    92% steam
    4.6★ galaxy
    200–600h ending
    55% idle
  10. DodecaDragons cover art

    DodecaDragons

    Also pure numbers

    Twelve dragons, twelve colours of magic, and one of Galaxy's most-favourited games. Big numbers, handsome UI.

    4.6★ galaxy
    has ending
    55% idle
  11. Calculator Evolution cover art

    Calculator Evolution

    Also pure numbers

    Upgrade a pocket calculator into something with far too many digits. Clever programming-flavoured progression.

    4.5★ galaxy
    55% idle
  12. The Prestige Tree cover art

    The Prestige TreeComplete

    Also pure numbers

    A skill tree where every node is a prestige layer. It spawned the Modding Tree and a thousand descendants.

    4.6★ galaxy
    30–80h ending
    50% idle
  13. Algebraic Progression cover art

    Algebraic Progression

    Also pure numbers

    Grow variables, unlock functions, climb the algebra. A math incremental with a following.

    4.4★ galaxy
  14. Black Hole Fishing cover art

    Black Hole FishingUpdated

    Also science

    Use a black hole to vacuum fish from a pond, then breed, inject traits into and research them while feeding the singularity to grow it.

    89% steam
  15. Ordinal Pringles cover art

    Ordinal Pringles

    Also pure numbers

    A spiritual successor to Ordinal Markup: climb the ordinal hierarchy, one absurd notation at a time.

    4.4★ galaxy
    45% idle
  16. Idle Gumball Machine cover art

    Idle Gumball MachineUpdated

    Also physics

    Fire gumballs into spinning gears in a plinko-style board, buy upgrades for explosive number growth, and ascend to trade everything for stronger bonuses.

    91% steam
    25% idle
  17. Berry Bury Berry cover art

    Berry Bury Berry

    Also physics

    Grow berries in a first-person garden and drop them into a strange hole for cash, upgrading helpers while an unsettling mystery with several endings unfolds.

    98% steam
    has ending
  18. Version Control cover art

    Version Control

    Also pure numbers

    An Antimatter Dimensions-style game made for a jam where you move through a series of updates that transform your Darkness Dimensions.

    4.4★ galaxy
    has ending
  19. (the) Gnorp Apologue cover art

    (the) Gnorp Apologue

    Also pure numbers

    Strike a rock for shards and hire a growing crew of gnorps to smash and haul them, stacking synergies until the numbers explode.

    96% steam
  20. 拖拖拉拉小菲镇 cover art

    拖拖拉拉小菲镇

    Also physics

    Drag and fling crowds of chibi VTuber fan characters into jobs to gather resources, research and upgrade a growing town, with ragdoll physics.

    97% steam
    75% idle
  21. Dwarf Eats Mountain cover art

    Dwarf Eats Mountain

    Also physics

    Send dwarves and war machines to chew through mountains for gold and artifacts, then upgrade the operation to take on bigger peaks.

    4.4★ galaxy
  22. Cell to Singularity cover art

    Cell to Singularity

    Also science

    Evolve life from a single cell to a technological singularity, with a surprising amount of real science in the tooltips.

    89% steam
    70% idle
  23. Idle Lab Rats cover art

    Idle Lab Rats

    Also science

    Buy rats, train them in mazes and with lab equipment, and submit the best ones for grant money to expand your lab.

    4.3★ galaxy
  24. Cauldron cover art

    Cauldron

    Also pure numbers

    A young witch grinds minigames for resources that power up her party, uncovering the map through turn-based fights and huge skill trees.

    96% steam