Duo Labyrinth Mapper - Delve
Crawl above. Map fills below.
Only for iPhone
Expected Oct 23, 2026 · Free · In‑App Purchases
iPhone
Open iPhone Duo top to bottom: a first-person labyrinth above, a grid map below that fills in as you walk. Past Stratum I, the floors never end.
A two-screen dungeon crawler: step through a first-person labyrinth on the upper screen while the grid map on the lower screen fills in as you walk.
Past the hand-built first stratum, the labyrinth goes on without end, every floor a new shape.
■ Delve above. Map and controls below.
Open iPhone Duo top to bottom and the upper screen becomes the labyrinth, the lower your map and controls.
You only look at the top — everything you touch is on the bottom.
Closed on the cover screen, or on any iPhone: it all works.
■ The map draws itself
Walls, doors, stairs, chests, springs and barred doors you see are drawn on the map automatically.
Double-tap a spot on the map to walk there over squares you've visited.
Roaming "lords" move one step at a time across your map. Read their moves and slip past.
■ Close to camp. Close to copy.
Close the phone inside the labyrinth and the cover screen becomes a campfire.
Close and reopen in front of an ancient tablet, and its pattern presses onto your map — revealing a hidden door.
■ Your map is your pay — and your pride
File your maps at the Surveyors' Guild and get paid for how much you've explored.
Explore every square for a gold seal. Even a party wipe never erases your maps.
■ Turn-based battles with a party of four
Choose four of five classes: Blade, Warden, Archer, Arcanist and Herbalist.
Repeat, Auto and Fast keep battles brisk.
When the Danger meter under the move pad fills, monsters appear.
■ Stratum I: the Vine Forest — and the endless depths below
Three hand-built floors and the warden at the bottom. Defeat it and the stairs lead further down.
From B4F on, every floor is a new maze, without end. The deeper you go, the tougher the foes and the richer the chests. A lord haunts every third floor, a warden every ninth.
■ Also
- Fully offline. Your adventure and maps are saved only on this device, every step
- Dominant-hand setting swaps the map and move pad on the lower screen
- Three difficulty levels, changeable anytime
- All sound is synthesized; original FM-style music
- Steps: each move onto a new square uses 1 step; turning and retracing are free. Start with 100 steps plus 25 free every day (no carry-over). More steps are available as in-app purchases
- No ads while exploring or fighting. A banner appears only in town. Remove ads with a one-time purchase
Terms of Use: https://nayukitecture.com/works/duo-maze-terms-of-use.html
The developer, tasuku nayuki, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- tasuku nayuki
- Size
- 7.3 MB
- Category
- Roleplaying
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
13+
- 13+
- Frequent
Cartoon or Fantasy Violence
Contains
Advertising
- In-App Purchases
Yes
- 350 Steps $2.99
- 100 Steps $0.99
- 1,200 Steps $9.99
- Remove Ads $1.99
- Copyright
- © 2026 Tasuku Nayuki
