CALCULATED
SURVIVAL

Solve to survive. A math-based roguelike played on a retro calculator.

Play in Browser Join the Playtest

Coming to Android & iOS — store links land here.

Every key has a price.

STD

Combat

Face a target number. Type an equation, hit =, deal damage equal to the gap you close.

⚡ 25%

Hardware Wear

Every press burns key durability. Flickering keys misfire, sticky keys double-press, and worn keys break.

🩸 DRAIN

Risk & Reward

Vampire keys drain your battery on press. Power keys heal it. Miss the target and you take the damage instead.

$ LOOT

Salvage

After every kill, spend coins to recharge, repair keys, or upgrade your loadout before the next target spawns.

Still in the lab.

Calculated Survival is in active development. The build below is the actual game — not a trailer — running live in your browser. Break it, find the bugs, tell me what's broken.

Launch the Build