Games like Portal 2, where one idea carries the whole game

Valve gave you a gun that makes two holes and then spent a whole campaign proving it had not run out of ideas. That is the whole trick of Portal 2: one verb, taught in a corridor, then bent through gels, light bridges, tractor funnels and Aperture's own history until the last chamber feels nothing like the first. Games like Portal 2 are the ones that take the same bet — pick a single impossible thing, hand it over early, and trust it to carry a campaign. The eight below do that, and they do it with eight different impossible things.

The lowest price we logged for each game, read on 13 November 2026 and covering 26 September to 6 November 2026. Readings before 26 September are left out because the feeds then also carried Steam accounts, console keys and region-locked keys, so the low shown on a game page can be lower than the figure here. Live prices sit on each game page. Two-player answers come from each game's own Steam category list.

Game	Two-player?	Low	Date	Store
The Talos Principle	No	$1.89	5 Oct 2026	Eneba
The Entropy Centre	No	$0.59	31 Oct 2026	Eneba
Antichamber	No	$9.99	2 Oct 2026	Steam
Manifold Garden	No	$1.52	3 Oct 2026	Driffle
Superliminal	Yes	$3.89	5 Nov 2026	Driffle
The Turing Test	No	$3.77	28 Oct 2026	Eneba
Q.U.B.E. 2	No	$0.84	29 Oct 2026	Gameseal
Escape Simulator	Yes	$8.67	6 Nov 2026	Eneba

Aperture's one good idea, borrowed and bent

Croteam built its puzzle enclosures outdoors, in ruins, which changes the mood more than it changes the work.

Croteam's answer to the portal gun was a toolbox rather than a single device: jammers that switch off a turret or a gate, connectors that redirect a laser, fans, boxes, and recording units that let you solve a puzzle alongside a copy of yourself. Its store listing counts more than 120 puzzles, which makes it the longest game here by a wide margin, and the structure will be instantly legible to anyone who has finished Portal 2 — numbered enclosures, a hub between them, a creator's voice narrating your progress with increasing unease.

The real departure is where the writing lives. Portal 2 pipes GLaDOS into your ear whether you want her or not; The Talos Principle puts most of its philosophy on optional terminals you can walk straight past, and the ones who talk to you are an ancient voice called Elohim and a sarcastic program hiding in the archives. You can play it as a pure puzzle game and never read a word of it, which is not an option Valve ever offered. Those recording puzzles are also the hardest thing in the genre once the game starts asking you to coordinate four selves at once.

ASTRA rides on your arm and does the talking, which is as close as anything has come to the Wheatley arrangement.

Stubby Games took the one structural element nobody else copied: the device that talks. In The Entropy Centre you carry ASTRA, a handheld unit that rewinds an object through the last few seconds of its own history — a cube you dropped into a pit comes back out of it, a bridge that collapsed un-collapses, a platform returns to where it was. The puzzles are therefore about the past rather than about space, and the correct solution often involves deliberately ruining the room first so that you have something worth reversing.

It is set on a colossal station in orbit above an Earth that an extinction-level event has set ablaze, with you apparently the last person alive, and ASTRA chatters through all of it — advice, commentary, the occasional opinion about your route. Its own store listing sells the whole game in three words, "think in reverse", and that is a fair summary of the demand it makes on you: the instinct from Portal 2 is to look for a surface, and here the useful instinct is to look at what has already happened. The Entropy Centre keeps its difficulty curve gentler than anything else on this page, which makes it the pick for someone who wanted the companion and the facility more than they wanted to be stumped.

Games like Portal 2 where the geometry is the enemy

Portal 2 never lies about space; it just adds doors to it. These three lie.

Nothing can be taken at face value. Corridors loop back on themselves, rooms reconfigure when you look away, and the opening stretch of Antichamber is spent unlearning assumptions rather than acquiring tools. A block gun does arrive eventually, but the game's reputation rests on the part before it. Alexander Bruce built it alone over several years and it shows in how little it explains.

Walk off an edge in Manifold Garden and you land on the same edge, which is the puzzle and not a bug.

Falling is the mechanic. Geometry in Manifold Garden repeats infinitely in every direction, so dropping off a ledge returns you to the ledge, and you solve rooms by changing which surface counts as down. There is no voice, no story and nothing chasing you.

Pick up a chess piece and it keeps the size it looked from where you were standing — move closer first and it comes away tiny, step back and it is the size of a building. Pillow Castle built Superliminal entirely on forced perspective and optical illusion, framed as a dream-therapy programme you are trying to wake up from, and it is the one game on this page where the solution is often to misjudge a distance on purpose. Steam lists online co-op for it too, though that is a bolt-on rather than the designed-for-two arrangement Portal 2 shipped with.

A voice on the intercom, and chambers only a human can solve

Tom insists these tests can only be passed by a human, and spends the game explaining why that matters.

Ava Turing arrives on Europa to find the ground crew gone and a station AI named Tom waiting with a sequence of rooms that, it claims, only a person could pass. The tool is an energy gun that pulls power out of one receptacle and puts it into another, which is a tidier and more mechanical idea than anything in Portal 2 — there is no physics to exploit, only routing. What The Turing Test does better than most of this list is the two-hander: Tom argues with you continuously about whether the tests prove anything, and the plot turns on that argument rather than on a facility collapsing. BULKHEAD resisted padding it out, and the station never outstays the argument.

Gloves, not a gun. Q.U.B.E. 2 gives Amelia Cross a suit that can push, pull and conjure coloured blocks onto marked wall panels, so you build the solution rather than route around it. She is a stranded archaeologist in alien ruins, in radio contact with another survivor who may or may not be telling the truth, and the sequel added outdoor sections the first game never had.

Two players, one set of chambers

Everything not nailed down can be picked up, examined and thrown, which is how most of these rooms get solved.

Twenty-eight rooms designed by people who build real escape rooms for a living, playable alone or with someone else online. These are not physics puzzles — they are locks, codes, hidden compartments and props you turn over in your hands — so Escape Simulator scratches the co-op itch from Portal 2 without pretending to be a physics toy. Pine Studio shipped a level editor with it, and the community rooms now outnumber the official ones by a wide margin. It is on Game Pass, so a subscription you already hold covers the experiment of finding out whether the two of you enjoy arguing about a padlock.

The Stanley Parable sits near the top of both of the published round-ups checked for this piece, and it is absent here for a dull reason: our record carries only two listings for it, too thin a basis to quote a low from.

Valve's own teaser for Portal 2, on the publisher's channel.

Which chamber to step into next

Play The Entropy Centre. Of everything above it is the one that reproduces the actual shape of Portal 2 — a device that talks, a facility to walk out of, discrete rooms that teach one rule and then invert it — and it is the only pick where the tool has a personality rather than a function. It is the gentlest of these on a player who wants to finish, rather than to be beaten.

Take The Talos Principle instead if what you wanted was to be properly stuck, since it is several times the size and its late recording puzzles are the hardest thing here. Go to Antichamber if the part you remember fondly is the moment a corridor stopped making sense. And if the co-op campaign was the reason you are reading this at all, Escape Simulator is the only entry built for two from the start. Portal 2 itself is still listed, in case you arrived here having only played the co-op.

Our short-games round-up covers neighbouring ground, and the low-end PC list matters here because most of these run on almost nothing. Games like Outer Wilds is the closer companion piece when the puzzle you want is solved with knowledge rather than a tool, and the classic PC list places Portal 2 among its peers.

We wrote this from store pages, published reviews and our own price record, not from playing each game for this piece. Some store links on our game pages are affiliate links, so playze may earn a commission at no extra cost to you.