CebRunner: Mental Math Run

Two gates, two operations — only one grows your crowd, and the better pick flips as you go. A quick trainer gets you playing in seconds. Pick fast, run far.

Two gates. Two math operations. One leaves your crowd bigger — and which one flips depending on how many you have right now.

Most number-runner games let you coast: multiply usually wins, so you stop thinking. Cebrunner won't. A gate like x3 beats +20 when your crowd is small, but +20 pulls ahead once you're tiny — so you read the numbers and decide in the half-second before the gate arrives.

WHAT YOU DO

• Drag your crowd left or right to pick a gate. The operation applies instantly.
• Watch the crossover: the better choice changes as your crowd grows and shrinks.
• Clear the walls. Each needs a minimum crowd — drop below it and the run ends.
• Go as far as the math lets you. Difficulty scales with distance.

WHY IT READS CLEARLY Your crowd is a single number drawn as tiered shapes: ten triangles merge into one square, ten squares into a pentagon, and so on. A crowd of thousands still fits on screen and stays countable, with the exact number shown as you run.

BUILT TO KEEP

• Earn coins every run, buy upgrades, and unlock neon themes in the shop.
• A short interactive trainer teaches the whole game in seconds.
• Accessible from the start: reduce-motion, a haptics toggle, and a colorblind-safe palette.
• Plays offline, one-handed, in quick sessions.

No timers between runs, no wrong-answer punishment screens — just you, two gates, and the arithmetic.

How far can you run before the math catches up?