A marble maze across both halves of the Duo, where folding turns the floor into a ramp
Does Marbles Unhinged: Folding Maze work on iPhone Duo?
Yes, out October 23, 2026, and seen in a simulator recording: the two halves are one board, and folding the hinge turns a floor into a ramp, a wall or a drop.
- Simulator verifiedGreg Gardner of Cromulent Labs, the developer, in a submission to FoldHunt on October 20, 2026, saying the game was run in the iPhone Duo simulator, with a minute of gameplay in the simulator's device frame on the game's site, on YouTube and on X. The App Store description calls it a marble maze where the two screens are two halves of one board and the hinge is a second control. The game came out on October 23, 2026.
Adapted for the fold
- Book · Partly folded
The hinge reshapes the maze
Bend the top half and its floor becomes a ramp, steeper as you fold. Stand it up to bank the marble off a wall, hold the right angle to open a gate, or snap the hinge to throw the marble across the crease.
- Open · Inner display
Two halves, one board
Open flat, the maze runs across both halves, and you tilt the phone to roll the marble home. In later worlds you steer two marbles with one tilt, and the top half mirrors the bottom.
About Marbles Unhinged: Folding Maze
Marbles Unhinged is a marble maze made for the iPhone Duo. The two screens are two halves of one board, and the hinge is a second control: tilt to roll the marble, fold to turn the top half’s floor into a ramp, a wall or a drop. Some gates open only between certain angles, snapping the hinge throws the marble across the crease, and rocking the whole phone shifts gravity on both halves at once.
There are worlds of levels, each adding a trick: The Fold (ramps, angle gates, ice and rails), Duo (two marbles, one tilt), Mirror (the top half reflects the bottom) and Impulse, with a fifth, Unhinged, coming. Every level has three stars to chase and Game Center leaderboards. On other iPhones and iPads it plays with an on-screen hinge. The first levels of each world are free, and unlocks are one-time purchases. It came out on October 23, 2026, the Duo’s launch day.
Evidence reviews
What we checked, when, and what the evidence establishes. Each record preserves the support label at that check.
· Simulator recording reviewed
Simulator verified · iphone-duo
Watched the site's 60-second gameplay video, the same one as on YouTube and X: the game in the simulator's Duo device frame, open flat with the maze across both halves, then bent partway so the top half's floor becomes a ramp, with a gate marked 110–130° and later 155–165°, two-marble and mirrored levels, and a three-star "Beautifully rolled" result.
Poses shown: Open, Book. These are observations of the evidence, not a test of every interaction.
App version: 1.0. Environment: iPhone Duo simulator.
The game hides the status bar, so the simulator is told by its device frame and the developer's word. The video is edited with crossfades, the cover display isn't shown, and no Xcode version is given. No build was tested.
View reviewed evidence ↗
Watch it unfold
On X
I made a marble game for iPhone Duo where the hinge is the controller. You fold the screen to tip the board and roll the marble home. Every world adds a new way to use the fold. Marbles Unhinged is up for pre-order now and launches Friday, Oct 23. App Store Link below ⬇
Related guides
iPhone Duo games: what's coming, and what the fold does for play
Which games have been shown on iPhone Duo, how un-updated games look on the open display, and the new kinds of play builders are making with the hinge, the half fold and two screens.
iPhone Duo poses: closed, open, book, standing and Split View
A plain-language guide to the ways you will hold iPhone Duo, what the phone itself does in each, and the apps and ideas that make the most of them. For anyone buying one, and for anyone building for it.
The best iPhone Duo apps so far (October 2026)
The apps worth installing now that iPhone Duo is on sale, from the apps Apple named as launch partners to indie apps whose developers have shown a real iPhone Duo layout, picked for what they do when you open the phone.
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Sources: Marbles Unhinged on the App Store (apps.apple.com) · Marbles Unhinged website, with the gameplay video (marblesunhinged.com) · Greg Gardner on X (x.com)
More for iPhone Duo
Paper & Grain
Jeremy Collins
An origami puzzle game where you fold the Duo to fold the paper and close it to crease
Simulator verified: Jeremy Collins, the developer, in a submission to FoldHunt on October 21, 2026, saying the Duo's seam works as a crease and the Guidebook can sit beside the sheet in tabletop or open. The Paper & Grain page on the developer's site has iPhone Duo simulator screenshots and an 18-second overview of the Duo folding the paper. The App Store description says the game is optimized for iPhone Duo, with optional folding along the device seam on iOS 27.1 or later. Version 1.0 was released October 19, 2026.
- Open
- Book
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Keep It Shut
Tenth Room Studio
A horror game where the Duo is a hotel room door: fold it shut, open a crack to peek
Simulator verified: Tenth Room Studio, the one-person studio of Kane Vu, in a submission to FoldHunt on October 20, 2026. The press kit (tenthroomstudio.com) has unframed iPhone Duo screenshots at the sizes of the simulator's open display (2853 × 2007) and cover (1398 × 2034). The game is coming soon to the App Store; its release date is to be announced.
- Closed
- Book
- Open
Tapete: 2 Player Board Games
Óscar de la Torre
Fourteen board games for two on one phone, where the hinge is part of the board
Simulator verified: Óscar de la Torre, the developer, in emails to FoldHunt on October 12, 2026 and a week later, saying the game was built with Xcode 27.1 and tested in all three postures in the iPhone Duo simulator. The site's 28-second preview is captioned "recorded on the iPhone Duo simulator". The App Store description says the game is compatible with iPhone Duo. Version 1.3 (released October 18, 2026) adds 16 languages.
- Open
- Book
- Closed