Built for Duo

Two Fold

A puzzle platformer with separate worlds on the outer and inner screens

Smaat Pay LLC · Games · Free · in-app purchases

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iPhone screenshots

iPad screenshots

How it uses iPhone Duo

According to the developer's App Store description (current as of version 1.2, October 12, 2026), Two Fold is built specifically for iPhone Duo. The Outer world is what you see on the outer display with the phone closed, and the Inner world appears when you unfold it. Folding and unfolding shifts Uno between the two. On iPhones without a fold, rotating the phone switches worlds instead. We have not yet tested Two Fold on an iPhone Duo.

What’s New

Version 1.2 · October 12, 2026

This is a big update. Here's what's new: - Three new chapters, 34 to 36. Uno has to bring down a whole crowd of Grumps on both screens, and then face the boss. Level 36 is the first time you meet Chrono and Rift. - Chrono and Rift are two new friends. One stops time and the other opens portals. I won't say more, you'll see. - A short tutorial before Level 1 that shows how to roll, fold, throw stars, squeeze through gaps and rewind time. It's free. - Pet Central is a little park where your pets live. Play with them, throw things for them to fetch, or play peekaboo. - Twinkles are hidden in the levels. Every new one you find gives you a sparkle to spend in Customize. - iPad is supported now, and I fixed the layout on small and large iPhones. - Lots of small fixes. Uno slips through tight doorways better, and a few levels are fairer. Fun fact: Uno, Chrono and Rift all come from K2-18 b, a real planet about 120 light-years away that may be covered in deep oceans. That's why they're so soft, round and bouncy. The Grumps come from Proxima Centauri b, a real planet circling the closest star to our Sun, only about 4 light-years away. It's a rocky, rough world blasted by radiation from its star, which is why Grumps are such tough, spiky rocks. So the Grumps actually live much closer to us than Uno does. Thanks for playing. If you enjoy it, a review really helps a small game like this.

About this app

Two Fold: Uno's Quest is a puzzle adventure from Smaat Pay LLC about Uno, a small round creature searching for his lost family. Each level exists in two versions: an Outer world and an Inner world. Moving Uno between them, and using what you find in one to clear an obstacle in the other, is the core of every puzzle. Along the way Uno rolls, throws stars, squeezes through gaps and learns to rewind time, and meets companions such as Momo, Pip, Bao and Blanko, while spiky rock creatures called Grumps try to keep him lost. The story spans hand-built chapters, with version 1.2 adding chapters 34 to 36, two new characters who stop time and open portals, a free tutorial and a pet park. Beyond the story there are two nine-level events ending in boss fights and an Endless mode with three tiers, plus customisation for Uno's hats, outfits, fur and eyes, some unlocked only through play. Game Center leaderboards cover levels, events and Endless runs. The game is free to download with levels 1 to 17 playable at no cost; the rest of the story unlocks with a single one-time purchase, with no subscription or ads. It is aimed at children and adults alike, and it also runs on other iPhones and, since version 1.2, iPad. On iPhone Duo, the two worlds map to the device's two displays.

App Store descriptionWritten by the developer.

Uno is lost. Help him find his family. Two-Fold is the first game built specifically for a iPhone Duo. Every level exists in two dimensions: the Outer world you see with the phone closed, and the Inner world that opens up when you unfold it. Fold and unfold to shift Uno between them, using what you find on one side to solve what's blocking you on the other. No folding phone? No problem. Two-Fold plays just as well on any iPhone, switching dimensions with a simple turn of your phone instead of a fold. THE JOURNEY Roll, fold, and puzzle your way through 33 hand-built levels as Uno searches for his family. Meet Momo, who teaches him to rewind time. Meet Pip, lost just like him. Meet Bao and Blanko, who teach him to stand up to the Grumps — spiky little troublemakers who'd rather Uno stayed lost. EVENTS Once the story's rolling, take on Uno's Golden Adventure and the Classic Event: two 9-level gauntlets, each ending in a boss fight against Grumtula or Grumstar. ENDLESS MODE Keep playing after the story ends. Meadow is free forever; Night and Storm raise the stakes for players who want more. MAKE UNO YOUR OWN Hats, outfits, fur, eye color, and more — including secret looks you can only unlock by playing (beat both bosses, or get caught by a Grump one thousand times, if you dare). Compete on Game Center leaderboards across every level, event, and Endless tier. Two-Fold is free to download, with Levels 1-17 playable for free. The rest of Uno's story unlocks with a single one-time purchase — no subscriptions, no ads, no pressure. Built for curious kids and patient grown-ups alike.