Cocoon: The Puzzle Design With No Fat On It

There is a particular kind of tiredness that comes from modern puzzle games. It isn’t the puzzles. It’s the distance between them — the walk back to the thing you already solved, the second cutscene explaining the lever, the collectible you’re meant to want. Most puzzle games are a good idea wrapped in forty minutes of administration.

Cocoon has none of that on it. Geometric Interactive’s debut, released on 29 September 2023 across PC, PlayStation, Xbox and Switch under Annapurna Interactive, runs somewhere around five hours and spends all five of them doing the one thing it exists to do. I have played puzzle games since the C64 was the only machine in the house, and I can count on one hand the ones this disciplined.

The idea, stated once

You are a small winged thing. You walk. You have one action button. You can pick up a glowing orb, and it sits on your back like a rucksack.

Each orb is a world. Set it on a pad and step in, and you are inside it — a whole biome, with its own colour, its own creatures, its own puzzles. Step onto another pad and you are spat back out, standing next to the orb you were just living in.

That’s the sentence. Everything Cocoon does for five hours is a consequence of it.

Because an orb is a world and an object, you can carry a world into another world. You can be inside orb A, holding orb B, and set B down and enter it — you are now two worlds deep. Later you’ll be carrying a world that contains the world you need to be in, and you will have to think about what “inside” means for about ninety seconds before it clicks into place.

And because an orb is an object, it can also be a tool. Each one lends a power to whoever’s carrying it. So an orb is simultaneously a place you can go, a key you can hold, and a thing that has to be somewhere for a puzzle in a different place to work. Three roles, one noun, zero explanation.

Teaching with the level instead of the text

Cocoon has no dialogue. No text. No tutorial pop-up telling you to press the button. No hint system, no HUD, no map, no journal.

This is easy to describe as minimalism and get wrong. Minimalism is what it looks like. What it actually is is teaching — every mechanic gets introduced in a room where only one thing can happen, in a place where the wrong answer is visibly the wrong answer. You learn the orb-as-tool idea in a corridor where the tool is the only variable. You learn nesting in a chamber that gives you two orbs and a very short leash. By the time the game combines the ideas, you’ve already been quietly examined and passed.

Jeppe Carlsen was the lead gameplay designer on Limbo and Inside at Playdead, and this is the same craft with the safety off. Limbo taught you by killing you; the rooms were short, the deaths were instructive, and the restart was instant. Cocoon barely kills you at all, and it doesn’t need to. It teaches by geometry — a ledge you can see and can’t reach, a pad that’s clearly a pad, a door that clearly wants something. The lesson arrives through your eyes before it arrives through your hands.

That’s an old skill and a rare one. The real ancestor here is Geoff Crammond’s The Sentinel (1986), which I played on a C64 in a room with the curtains shut and no idea what I was doing for the first hour. The Sentinel had a handful of verbs and no story at all, and it taught you its entire logic by putting you on a hill and letting you look. Cocoon has that same faith: that a player looking at a well-built space will work it out, and that working it out is the whole product.

Portal (2007) is the other obvious relative, and Cocoon is more austere than Portal — no voice in your ear, no jokes, no character to be charmed by. What it keeps is Portal’s teaching curve, where the tutorial and the game are the same object and you can’t see the seam.

The loop, and why the loop holds

Here’s the mechanical thing I keep turning over.

Most puzzle games have a currency problem. They need to hold back abilities so the difficulty can rise, so they lock things behind doors, gate them behind progress, hand them to you on a schedule. The gating becomes the pacing, and you can feel the designer’s hand on the tap.

Cocoon solves this by making the ability portable and physical. You don’t unlock the power — you’re carrying it, and you can put it down. So the difficulty rises through logistics rather than through permissions. The question stops being “do I have the tool” and becomes “where does the tool have to be standing while I’m somewhere else”. The game never has to take anything away from you. It only has to build a room where you need to be in two places at once.

That’s a beautiful bit of economy, and it has a downstream effect the whole game rides on: backtracking stops being punishment. In a Metroidvania, going back is a tax you pay for the design’s shape. In Cocoon, going back is the puzzle — the return trip is the move, the carrying is the thinking. Walking is never dead time, because the thing on your back is the reason you’re walking.

The other place the fat gets trimmed is failure. Boss encounters are pattern-reading with instant retries; there is no resource attrition, no inventory management, no lives system left over from an arcade that closed thirty years ago. When you die, you are back a few seconds later, and the game has correctly assumed that your punishment was already the fact that you were wrong.

Where it costs itself something

I’d be a bad witness if I said the discipline is free.

Cocoon is a game with almost no friction, and friction is where a lot of people find feeling. There’s nothing here to be furious at, nothing to grind against, nobody to like. The world is gorgeous — Erwin Kho’s biomechanical architecture is genuinely strange, all chitin and wet metal and machines that look grown rather than built — and it stays at arm’s length. You will not carry a character out of this game, because there isn’t one.

The difficulty sits in a narrow band, too. The puzzles are clean — nearly every one lands with the small satisfying click of a well-made lid — and clean means the ceiling stays low. Nothing in Cocoon will hold you for an hour the way a late Obra Dinn deduction will, or leave you filling a physical notebook. If your favourite feeling in a puzzle game is being genuinely stuck and slightly insulted by it, Cocoon will feel like it’s letting you off.

And the ending is where the restraint runs out of road. A game this wordless has to land its close on shape and sound alone, and Cocoon’s finish is more of a chord than a sentence. It resolves. Whether it means anything is between you and the credits.

The verdict

Cocoon is the best-engineered puzzle game since Return of the Obra Dinn, and it wins on completely different ground. Obra Dinn is a mountain you climb with a pencil. Cocoon is a machine with every unnecessary part removed, and the pleasure of it is watching a designer refuse — over and over, for five hours — to pad his own work.

That refusal is worth more than it sounds. This is a game that could have been twelve hours. It could have had a collectible chime and a lore codex and a second act where you revisit the first orb with a new hat. All of that was available, and all of it would have sold, and Carlsen threw the lot away. What’s left is five hours where every single minute is the good part.

Take the afternoon. It only wants one.

What to play next: Chants of Sennaar, which came out the same month and teaches you a language with no lectures either; Tunic, for the other great modern experiment in telling the player nothing; and Return of the Obra Dinn if you want the version that fights back.

Spoilers below

The nesting reaches its proper depth in the back half, when you’re moving orbs between worlds that are themselves sitting inside orbs, and the game asks you to hold a mental stack three deep. What’s remarkable is that Cocoon never renders this as a diagram. There’s no map of the nesting, no visual aid, no “you are here” — the structure lives entirely in your head, and the game trusts that it will fit there. It does, mostly, and the two or three moments where it doesn’t quite fit are the most alive the game gets, because you have to stop and physically reason about containment.

The bosses are the one concession to convention, and they’re better than they need to be. Each one is built out of the orb power you’ve just acquired, so the fight functions as an exam on the mechanic — read the tell, apply the verb, repeat with a variation. It’s the Limbo idea again: the encounter is a puzzle wearing a monster costume, and it dies when you’ve understood it rather than when you’ve out-twitched it.

The final stretch collapses the orbs together, and it’s the one time Cocoon reaches for grandeur. It’s a fine ending and a slightly hollow one — the game has spent five hours teaching you that everything means something mechanically, and then closes on something that means something thematically, in a register it never taught you to read. I’d have taken one more puzzle over the awe. That’s a small complaint about a game that got almost everything else exactly right.