日本語

path-to-one

Cursed Number Labyrinth

A math roguelike based on the Collatz conjecture.
Guide the cursed number down to 1.

iOSDownload on the App Store AndroidGet it on Google Play
⚔️

Odd Rooms

3n+1 makes the curse swell. Defeat enemies and push on while taking damage.

🚶

Even Rooms

n/2 weakens the curse. A moment of rest, but the erosion never stops.

✨

Spell Cards

Halve, Shield, Heal, Peek and more. Use seven kinds of spells to survive every crisis.

🔥

Curse Chain

The longer the odd streak, the higher the damage multiplier. Fight, detour or flee.

👹

Seven Enemy Tiers

From slimes to dragons to the god of the end. Bigger numbers bring deadlier foes.

📜

Six Builds

Guardian, Accelerator, Sorcerer, Seer, Contractor and Overlord. Pick a school and find your own strategy.

WEEKLY

Weekly Challenge

Every week, everyone faces the same cursed number under the same conditions. Compete with players worldwide for the week's best score. The weekly champion chooses the cursed number for the week after next.

16 LANGUAGES

Play in 16 Languages

Japanese, English, Simplified Chinese, Traditional Chinese, Spanish, Brazilian Portuguese, Korean, German, French, Hindi, Indonesian, Russian, Italian, Turkish, Thai and Vietnamese. The App follows your device's language setting, and you can also pick a different language for the App alone in your device settings (Android 13 or later on Android).

Weekly Challenge

Version 4.0 adds the weekly ranking. Play it from "Weekly Challenge" on the title screen.
Every Monday (Japan time) a new "cursed number of the week" appears,
and everyone plays it under the same conditions: Guardian build, Normal difficulty.
Joining is optional; scores are sent only if you agree and register a nickname.
Link an account (Apple ID / Google on iOS, Google on Android) to keep your records when you change devices.

The weekly champion (on a tie, whoever reached that score first) chooses the cursed number for the week after next:
any number from 100 to 9999 that takes at least 70 steps to reach 1 (changeable until Sunday 23:55 JST).
That week's screen shows "Chosen by" with the champion's nickname.

The App may send a reminder around 18:00 each day about the Daily Challenge and more.
Reminders are scheduled on your device only and nothing is sent. Turn them off anytime in your device settings.

See the Privacy Policy and Personal Data Handling for what is sent.