Issun: One-Inch Hero

A tiny-hero idle RPG

Only for iPhone

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

iPhone

A gentle idle RPG starring a thumb-sized hero. Send him off, wait for his return. Fail and you lose no gear, only time. Explore a papercraft world. Free to finish. A thumb-sized hero sets out with a single sewing needle. Issun-Yusha is a gentle idle RPG: send your hero off, and wait for his return. No tricky controls. Send the hero to an area, and the adventure unfolds in real time. When he comes home, collect loot and experience. If he falls, you lose no gear and no gold — only time. So you can try again, as many times as you like. [A papercraft world] Hand-drawn in watercolor and paper cutouts, from a humble garden to the ogres' capital. Meet insects and little creatures, and fill your field guide and keepsake shelf. [At your own pace] Earn safely in the shallows, train in the mid-depths, or dive deep to conquer. Choose your depth and length. Offer spare gold at the roadside shrine for a little luck. [The spirit of Issun-boshi] Gear is everyday objects reimagined — a needle becomes a sword, a bowl becomes a boat. Clear every area to unlock legendary gear like the Magic Mallet. [Free to the end] All 84 areas are playable to the finish for free. No ads, no gacha. [Pro (one-time ¥200)] For a smoother ride: auto-expeditions (send off up to 12 hours at once), fight alongside a companion (puppy, kitten and more), hero outfits, paper backgrounds, and custom names for your hero and companions. The whole game stays free either way.

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The developer, Daisaku Seto, 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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    Information

    Seller
    Daisaku Seto
    Size
    15.9 MB
    Category
    Roleplaying
    Compatibility
    Requires iOS 16.0 or later.
    • iPhone
      Requires iOS 16.0 or later.
    • Mac
      Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 2 more
    • English, Japanese, Simplified Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Daisaku Seto
  • Developer Website
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