BIG BANG

BUILD. SURVIVE. EVOLVE.

Build a maze, outlast hordes of up to 40,000 and evolve through nine eras of real science, from the first instant of time to a war between galaxies.

40,000enemies on screen at once
9eras of real science
40forms to evolve through
24awards named for scientists

Watch it move

The whole universe wants in

Four portals. One maze. Every enemy is drawn, moved and fought at full speed, on a phone.

The Arrow of Time

From a quark to a galaxy

Win an era to unlock the next. Every tower, enemy and card is a real thing, with a one-line explanation.

Era 0

The Singularity

The tutorial. Theories of quantum gravity, such as strings and loops, propose what spacetime is made of.

String TheoryLoop Quantum GravityAdS/CFT
Era 1

The Big Bang

In the first breath of the cosmos, you break the perfect symmetry.

GluonPhotonGravitonBoss: The Antimatter
Era 2

The Primordial Soup

Amino acids link up, RNA copies itself, and the first cells fight the first viruses.

T CellAntibodyATP SynthaseBoss: The Superbug
Era 3

The First Landfall

You haul yourself onto the shore and gulp your first air.

ThornWasp NestMyceliumBoss: The Tyrant
Era 4

The Age of Beasts

Warm blood. Fur. A brain that remembers where the food was.

SlingerBee HiveFlint MineBoss: The Mammoth Alpha
Era 5

The First Cities

Stone upon stone. Your walls are the first thing time cannot walk through.

BallistaCatapultGreek FireBoss: The Siege King
Era 6

The Machine Age

Iron learns to walk. The sky fills with hunters you built.

GatlingHowitzerTeslaBoss: The Landkreuzer
Era 7

The Stars

The war leaves Earth behind. The high ground is the only ground.

PlasmaLaserIon ArcBoss: The Supernova
Era 8

The Galactic War

Your shield wall spans a galaxy. Whole stars are your spears.

Dyson SwarmGrav LensDeath RayBoss: The Supermassive Black Hole
Thousands of enemies swarm a base of walls and towers

Survive

Outlast hordes of 40,000

Up to 40,000 enemies alive at once, pouring out of up to four portals. You move; your shots fire on their own.

  • Survive the wave, then the surge, then the boss.
  • A new horde in every era, each with its own tricks.
A maze of walls bends the swarm's path past rows of towers

Build

Build a maze. Bend the swarm.

Nothing walks through your structures. Place walls and towers to bend the horde's path, and a live preview shows the route it will take.

  • Repair, upgrade and sell between waves.
  • Damage stays, so every gold coin counts.
Choosing an upgrade card after a wave

Evolve

Evolve after every wave

Clear a wave to level up, pick an upgrade card and evolve into the next of five forms: a quark becomes a proton, an atom, a molecule.

  • Gold you save turns into Stardust for permanent upgrades.
  • Beat an era for the first time for a big Stardust bonus.
Achievements named for scientists

Learn

Real science, nine eras deep

Every tower, enemy, card and form is a real thing with a one-line explanation, and 24 awards are each named for a scientist whose discovery matches: Planck, Darwin, Curie, Newton and more.

  • Plays the same on every device: only the effects adapt.
  • No ads.

Together

Share the whole battle

Every battle is a replay

Send a link or a QR code. Anyone with the game watches your battle exactly as it happened.

Co-op for up to four

Share one universe with up to three friends, with voice chat. Build one maze, hold one line.

Host and share a room code,
or Quick Join to play with anyone.
YouPlayer 2Player 3Player 4

Begin at the beginning of time

One point of light. Thirteen point eight billion years. Your maze.