Cash out by surviving a 3-second exit. Your cell stops; rivals keep moving.
Play money only · Offline AI opponents
Personal best 0
There’s always a bigger cell.REAL RIVALS? NOT YET. THESE ARE BOTS.
48Decay protected
$10.00
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0:00
Mouse / ↑↓←→ MoveSpace SplitW EjectEsc Pause
Classic · Normal1 / 16 cells
EXIT VALUEDEMO
$10.00
Break even · $0.00Entry $10.00
3-second exit. Stay alive until it completes.
ARENAC3
A little survival instinct.
Move toward your cursorMouse
Move with keyboard↑ ↓ ← →
Split toward your aimSpace
Eject mass (hold)W
Zoom in / outScroll
Pause / resumeEsc / P
Eat small. Avoid big.
Collect dots to grow. You can eat a cell when you have at least 15% more mass and cover its center. Larger cells move more slowly.
Keep growing.
Above 100 total mass, gradual decay starts at 0.25% per second and increases with size, up to 0.8% per second. It is shared across all your cells, so splitting does not avoid it. Natural decay stops at 100 total mass (or 10 per cell if higher) and never removes demo credits. Bots follow the same rules. Decay freezes when paused and starts after spawn protection ends.
Split with a plan.
Split from 36 mass to launch half forward. Keep up to 16 cells. Pieces recombine after a short cooldown when you bring them together. Ejecting costs 14 mass per cell. Hold W or the touch Eject button for faster feeding: a 90 ms cooldown, about 10 volleys per second at the game’s 60 Hz simulation rate.
Know your demo value.
Your demo entry fee determines starting mass on a logarithmic scale, rounded to whole mass: $0.20 starts at 10 mass, $2 at 23, and $100 at 45. Higher entry buys starting size, with diminishing size gains. Food grows mass, not credit value. Splitting divides your credits between pieces. Ejection moves proportional credits into the pellet; rivals can take them. Cash-out holds your movement for 3 seconds while rivals keep moving. Splitting, ejecting mass, or losing a cell cancels the exit. No real money is involved. Ejected credits can be recovered by any cell, or carried by a fed virus; expired pellets and cells lost to the closing boundary remove those credits from play.
The green spikes bite.
Hide behind viruses while small. Eating one above 125 mass bursts you into pieces. Feed a virus 7 ejected pellets to launch another virus toward an opponent.
One endless arena.
Free-for-all: grow, compete against CPU rivals, and choose when to cash out. Eliminated rivals respawn. There is no round timer.
On touchscreens, drag the joystick or playfield to move. Tap Split or hold Eject. The game pauses when you switch away.