REVIEWS · ESSAYS · DESIGN NOTES
Wandering is what makes it interesting.
Puzzlebyrinth is a bilingual review site that reads thinking puzzles and indie puzzle games through a designer's eye — from Portal, Baba Is You and Outer Wilds to overlooked gems on Steam that the mainstream press never analyzes.
Free daily puzzles (Tridem refreshes at 06:00, CRYPTEM at 12:00, Math? at 18:00 JST), browser-playable experiments in the Labs, and a level editor to build and share your own — no account required.
Browse Reviews →Latest Reviews
All Reviews →Braid, Anniversary Edition
A single-player puzzle-platformer where you rewind, pause and bend the rules of time, world by world, to clear 2D hazards and assemble jigsaw pieces. Thekla's remaster of the 2008 indie classic — fully repainted, with hours of developer commentary.
puzzleplatformerlogicToki Tori 2+
A puzzle adventure across an open forest island where your only moves are whistle and stomp. You never unlock new abilities — only knowledge of how each creature behaves — in Two Tribes' 'Metroidbrainia.'
puzzlemetroidvaniaVoid Stranger
A 2D Sokoban puzzler in which you lift a floor tile with a rod and set it down elsewhere, descending a forgotten labyrinth past traps and foes. From a handful of verbs grow bottomless puzzles and a hidden story — made by System Erasure.
puzzlesokoban-likemeta-puzzleStoryteller
A puzzle about arranging characters and scenes across comic panels to satisfy a given story title — love, revenge, jealousy — making each prompt come true as a few-panel tale. A compact narrative puzzle by Daniel Benmergui.
puzzlenarrativeFEZ
An exploration platformer where you rotate a 2D world in 90-degree turns, shifting how the plane reads to connect platforms. Collect cube fragments while wandering a crumbling world — Polytron Corporation's signature take on rotation.
puzzle-platformerexplorationobservationThe Spectrum Retreat
A first-person puzzler set in the art-deco Penrose Hotel: you pull a colour out of one wall, carry it, and hand it to a matching barrier to open the way. Steam sits at 'Mostly Positive,' 76% of 223 (snapshot 2026-06-16); opinion splits over its double structure of puzzle and story.
puzzlefirst-personnarrative-puzzle
Essays
All Essays →Soundtrack: The Talos Principle 2 — answering scale with a choir
A first-person puzzle in which you leave New Jerusalem, the city the robots built, and walk toward the colossal Megastructure on the horizon. Damjan Mravunac's music is written for orchestra, electronics, and choir, sounding the small time of solving a puzzle and the time of marveling at the size of the world at two different tempos. Black coffee in hand, I, Doremi, take apart why the biggest sound is reserved for the walking.
Where 'Solvable' and 'Fun' Diverge — PuzzleJAX Hands 500+ PuzzleScript Games to the Machines (arXiv, Aug 2025)
One article today: "PuzzleJAX: A Benchmark for Reasoning and Learning" (arXiv preprint, August 2025) by researchers at NYU, the University of Malta, the University of the Witwatersrand (South Africa), and Microsoft (Sam Earle, Graham Todd, Ahmed Khalifa, Julian Togelius and others). They reimplement PuzzleScript — Stephen Lavelle's (increpare) 2013 puzzle-authoring language — on the GPU and hand 500+ human-authored games to tree search, reinforcement learning, and large language models. Read as a designer, the core is one observation: 'solvable by a machine' and 'interesting to a human' are not the same thing. Tree search brute-forces simple games but stalls the moment they get richer; LLMs score 0% on most. The authors even note PuzzleScript's own creator hesitating to embed an auto-solver into the IDE, a caution about measuring difficulty by search.
Nasir et al.: Evolving the Rules of Play Themselves — Fukai Reads MORTAR
A paper on automatic game design by Nasir, Togelius and colleagues. Instead of levels, MORTAR evolves game mechanics themselves using a quality-diversity algorithm paired with a large language model, judging quality by whether stronger AI agents reliably beat weaker ones. Running on GPT-4o-mini, it generates diverse, playable games and even quantifies each mechanic's contribution.
Soundtrack: Manifold Garden — Music that returns even when you fall
Choose your gravity, fall to the bottom, and you return from the ceiling: an endless architecture. The music Laryssa Okada wrote for it is built from strings and pads that never resolve, shaped much like the looping space itself. Black coffee in hand, I, Doremi, take apart why this music loops yet never sounds like mere repetition, through a lens you can carry back to your own composing.
Counterpoint on Blue Prince — Reading Through the Negative Reviews
Komugi rated Blue Prince 9.5/10. I examine the claims from the Steam and community negatives — randomness blocks progress, the two games don't mesh, midgame monotony. I agree that randomness becomes a gatekeeper; I push back on 'this isn't a puzzle.'
"Difficulty is structural" — a study that exactly decomposes the difficulty of arithmetic puzzles (4OPS, arXiv / accepted at AIED 2026, March 2026)
One article today. Yunus E. Zeytuncu's paper "4OPS: Structural Difficulty Modeling in Integer Arithmetic Puzzles" (University of Michigan-Dearborn) studies the Countdown / Des chiffres et des lettres style numbers puzzle, where you combine given integers with the four operations to reach a target. Using an exact dynamic-programming solver over 3.4 million instances, the author shows that difficulty is not explained by surface features (the size of the numbers or the target) but is fully determined by the number of inputs a minimal solution must use — a 'minimal sufficient statistic' for difficulty. I read it not as player criticism but as a piece that speaks directly to how designers can define and sequence puzzle difficulty. The preprint is from March 2026 and is accepted at AIED 2026.
Daily Puzzles
All Puzzles →New here? Start with Tridem — a wordless shape puzzle you can solve in a minute, refreshed daily at 06:00 JST. Then try CRYPTEM (12:00) and Math? (18:00).
- No account
Tridem
Three slide as one — a weekly arc
A daily sliding puzzle whose rule changes by weekday. Slide three pieces onto their goals. New every day; the full archive is free to browse. The engine itself verifies the unique solution.
- Free account
CRYPTEM
Reel cipher — a daily cipher lock
Rotate the reels until all five columns decode to their target digits. A logic lock whose cipher table is fully deducible from the opening position. Updated daily; the full archive is free to play.
- Premium only
Math?
The symbols lie — a daily rule-deduction number puzzle
What the five symbols do to a number reshuffles every day. Deduce today's rules from nothing but the results of your placements, across three boards. Stage 1 forces every symbol once — yet never pins the rules down; the back half is engineered to betray your first theory. Updated daily; the full archive is free.
Series
The Lineage of Meta-Puzzles
The lineage of games that turn rules themselves into something you operate on. How the idea of rewriting unfolded from Sokoban to Baba Is You.
Puzzles That Turn Looking into Play
A rare lineage where the act of looking is the progress. We read the design of observation puzzles through The Witness, Obra Dinn, and Lorelei.
The Design of Undo
A single rewind button reshapes the entire experience. Designs that forgive trials and designs that punish them.
Carving the Learning Curve
Where do you make the player stop, and where do you let them flow? From Baba's vertical wall to Cocoon's unbroken stream.
Recursive Puzzles
Boxes inside boxes, doors inside doors, worlds inside worlds. Games that translate recursion into puzzle mechanics.
Single-Verb Design
How deep can a single-verb game go? The lineage of Sokoban, Sausage Roll, and A Monster's Expedition.
Best of Puzzles
Annual and thematic roundups of recommended puzzle games — only the titles we can vouch for after playing them in depth.
About
Puzzlebyrinth is a bilingual review site that reads thinking puzzles and indie puzzle games through a designer's eye — from Portal, Baba Is You and Outer Wilds to overlooked gems on Steam that the mainstream press never analyzes.
Komugi · Indie game developer