path-to-one: Cursed Labyrinth

Math Roguelike – Collatz Quest

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

v4.0: Weekly Challenge. Everyone faces the same cursed number each week, and the #1 picks the number for a coming week. Link Apple ID or Google to keep your record. path-to-one is a math roguelike game based on the Collatz conjecture (3n+1 problem). Choose a "cursed number" and navigate a dark labyrinth where every room is a mathematical challenge. Odd rooms are dangerous — the curse swells with 3n+1, dealing damage. Even rooms offer brief safety — divide by 2 and press on. Your goal: reach 1 to break the curse. STRATEGIC COMBAT Every odd room presents a choice: fight head-on (3n+1), take a detour (n+1) for a card, use spell cards, or flee. Each decision affects your curse chain — consecutive odd rooms amplify damage up to 2x. In even rooms, press on, rush ahead, or take a risky bet. SPELL CARDS Start with 6 single-use spell cards from 7 types. Halve your number, subtract from it, shield against damage, heal HP, peek ahead, accelerate through rooms, or purify to even. Duplicate cards upgrade to powerful enhanced versions. 7 ENEMY TIERS From Cursed Slimes to the God of Ruin, each enemy tier brings unique abilities: Dark Fog negates foresight, Piercing cuts through shields, Despair triples erosion damage. 6 BUILDS AND 4 DIFFICULTY TIERS Choose from Guardian, Accelerator, Sorcerer, Seer, Contractor, or the premium Overlord — each with unique starting hands and playstyles. Challenge Normal, Abyss, End, or Void difficulty for greater rewards. WEEKLY CHALLENGE (OPTIONAL) Every week, players worldwide take on the same cursed number under the same conditions (Guardian build, Normal difficulty) and compete with their best score of the week on "This Week's Ranking". Joining is consent-based: nothing is sent until you choose a nickname and tap "Agree and register". Link your Apple ID or Google account (optional) to carry your record and nickname over to a new device or a reinstall. You can delete your account and ranking records from within the app at any time (Weekly Challenge > "Account" > "Delete account"). WEEKLY CHAMPION REWARD The week's #1 (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. The choice can be changed until Sunday 23:55 (JST), and that week's screen shows the chooser's nickname. DAILY CHALLENGE A unique seeded number every day, one attempt per day. Clear it for 1.5x score and 2x Curse Marks. DAILY REMINDER On days you haven't played the Daily Challenge yet, a notification reminds you around 18:00. Permission is requested after your first finished run, and you can turn it off in your device settings at any time. The reminder is scheduled on your device; nothing is sent externally. COMBO SYSTEM Clear consecutive rooms without taking damage to build a streak. Up to 100 bonus points added to your final score. DEEP PROGRESSION - 19 achievements to unlock - Grimoire tracks all enemies, cards, and events - Curse Marks currency to unlock builds and difficulties - Score ranking system (D through S rank) - Adventure records to track your history - 4 derived events unlock through repeated play RANDOM EVENTS Healing springs, curse traps, treasure chests, dark merchants — and their enhanced variants unlock after repeated encounters. 16 LANGUAGES English, Japanese, Chinese (Simplified), Chinese (Traditional), Spanish, Portuguese (Brazil), Korean, German, French, Hindi, Indonesian, Russian, Italian, Turkish, Thai, and Vietnamese. IN-APP PURCHASES (ONE-TIME) The game is free to play. Three optional items are available, each a one-time purchase that stays unlocked. Use "Restore Purchases" on the title screen after a reinstall. - Remove Ads: hides all ads - Unlock Number Input: choose any starting number from 2 to 9999 - Overlord Build: unlocks the Overlord build, strong in offense and defense ABOUT ADS A banner is shown at the bottom of the screen and a full-screen ad after you tap a button on the result screen. You can change how ads are shown at any time from "Ad settings" on the title screen. Can mathematics save you from the curse?

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- New Weekly Challenge: everyone takes on the same cursed number each week and competes for the best score on "This Week's Ranking" (optional, consent-based) - Weekly champion reward: the week's #1 (ties go to whoever reached the score first) chooses the cursed number for the week after next — 100 to 9999, taking at least 70 steps to reach 1, changeable until Sunday 23:55 (JST). That week's screen shows the chooser's nickname - A reminder around 18:00 on days you haven't played the Daily Challenge (can be turned off in your device settings) - Link your Apple ID or Google account to carry your ranking record to a new device - Delete your account and ranking records from within the app - Now available in 16 languages: English, Japanese, Chinese (Simplified/Traditional), Spanish, Portuguese, Korean, German, French, Hindi, Indonesian, Russian, Italian, Turkish, Thai, and Vietnamese - Changed the ad network and added "Ad settings" to the title screen - Quit a run partway through with the new "Quit" link (asks to confirm) - "Restore Purchases" is now also on the title screen

Version 4.0

The developer, Fuji Bit Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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Accessibility

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Information

Seller
Fuji Bit Inc.
Size
46 MB
Category
Card
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 15 more
  • English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish, Vietnamese
Age Rating
13+
  • 13+
  • Learn More
  • Frequent
    Cartoon or Fantasy Violence
    Horror/Fear Themes

    Contains
    Advertising
In-App Purchases
Yes
Copyright
© 2026 Fuji Bit
  • Developer Website
  • Privacy Policy

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