Infinite Universe
Infinite Universe app icon

Incremental Clicker Game

Infinite Universe: Space Idle

Tap to grow a universe from the Planck length to infinity. 21 zoom-out stages, real size comparisons and astronomy cards. It keeps expanding even while you are away.

GET IT ONGoogle PlayComing soon on theApp Store

Free · Contains ads · No in-app purchases · iPhone version coming soon

Universe screen: tapping grows the universe through the solar system stage

21 stages

From 10−35 m to infinity.

Every tap expands the universe while the camera keeps pulling back. Stages you have passed shrink toward the center at their true relative size, and the next stage drifts in from off-screen as a dashed ring. Each time your energy grows tenfold, the radius grows by 6.5 orders of magnitude. Scroll to zoom out.

1 / 21
Planck length
R ≈ 10−35 m
Current stageNext stageEvery 10×
  1. 0Planck length10−35 m
  2. 1Quark10−18 m
  3. 2Proton10−15 m
  4. 3Atom10−10 m
  5. 4DNA strand10−8 m
  6. 5Cell10−5 m
  7. 6Grain of sand10−3 m
  8. 7Human100 m
  9. 8City104 m
  10. 9Earth106.8 m
  11. 10The Sun108.84 m
  12. 11Solar system1012.65 m
  13. 12Oort cloud1015.2 m
  14. 13Nearest star1016.6 m
  15. 14Orion arm1019.5 m
  16. 15Milky Way1020.7 m
  17. 16Local Group1022.7 m
  18. 17Laniakea supercluster1024.7 m
  19. 18Observable universe1026.64 m
  20. 19Beyond inflation1030 m
  21. 20Infinity1040 m

How it plays

Tap, upgrade, Big Bang, repeat.

  • 8 upgrades

    Three tap upgrades and five auto-expansion engines. Every upgrade doubles at Lv 25, 50, 100, 200 and 400.

    • Quantum Fluctuation Finger
    • Graviton Glove
    • Inflaton Injector
    • Vacuum Fluctuation Generator
    • Dark Energy Tank
    • Hubble Flow Turbine
    • CMB Harvester
    • Multiverse Pump

  • Big Bang

    Restart the universe to earn Singularities. Each Singularity is a permanent +10% multiplier. Achievements, fact cards, research and best records are kept.

  • 5 cosmic constants

    Spend Singularities on research. Spending them lowers your multiplier, so every pick is a trade-off.

    • Time dilation
    • Resonance
    • Primordial seed
    • Vacuum engine
    • Nova taps

  • Grows while you are away

    Close the app and the universe keeps growing for up to 8 hours (up to 16 with research). A summary waits for you when you return, and an optional alert tells you when the idle cap is full.

  • ComboTap fast for up to x2.
  • Best pickThe most efficient upgrade right now gets a badge.
  • 17 achievements and statsStage times against your last run, Big Bang history graph, total taps and play time.
  • Backup and restoreCarry your universe over to a new device.
Upgrade screen with tap upgrades and auto-expansion engines
Stats screen with stage times and Big Bang history

Learn as you grow

A cosmic fact card for every stage.

Cards unlock as your universe reaches each scale: 21 fact cards, deep-dive cards and 21 true-or-false questions. Three of them, exactly as they appear in the game:

  • Planck length

    R ≈ 10−35 m
    1.6×10⁻³⁵ m — the shortest length physics can speak of. Below it the very idea of 'distance' breaks down and spacetime is thought to boil like foam. Our universe started here.

  • Earth

    R ≈ 106.8 m
    Earth's radius is 6,371 km. Vast from the ground, a pale blue dot from afar. Our planet orbits the Sun at about 30 km per second — you are flying at that speed right now.

  • Milky Way

    R ≈ 1020.7 m
    About 100,000 light-years across, holding 100-400 billion stars. We sit 26,000 light-years from the centre. In ~4 billion years we collide with Andromeda — yet almost no stars will actually hit each other.

Real size comparisons

Your universe’s current diameter, measured against 30-odd real things:

  • protons
  • viruses
  • ants
  • soccer balls
  • buses
  • Eiffel Towers
  • Mount Everests
  • Moons
  • Earths
  • Suns
  • light-years
  • Milky Ways

Astronomical figures in the game are approximations for fun and learning.

Cosmic facts screen with the Planck length and Quark cards

Plain and simple

No sign-up. Your game stays on your device.

  • No account

    No sign-up and no login.

  • Saved on your device

    Your game progress is stored only on your device.

  • Rewards even without ads

    Rewarded ads are optional, and the reward is still granted when an ad cannot be loaded.

Apart from anonymous usage statistics (Firebase Analytics) and ads (AdMob), nothing is sent off your device. Privacy policy

Start at the Planck length.

GET IT ONGoogle PlayComing soon on theApp Store