SERIAL
Retro Revisited
45 episodes · updated 2026-09-30
Most new ideas have decades-old prototypes. Each episode, Toki replays one retro puzzle in a modern setting, checking its original context and whether it is still worth playing now.
Episodes
- Ep. 45Lights Out (1995): Press a Button and Its Neighbours Flip. Linear Algebra Sat Under Those 25 Buttons2026-09-30
Tiger Electronics' 1995 handheld Lights Out is a game of 25 buttons where each press flips its neighbours. Beneath it lies linear algebra over 0 and 1: only a quarter of layouts are solvable, and 15 presses is the worst case. This article follows only verified facts, from the earlier Merlin (1978) and XL-25 (1983) to Sutner's 1989 paper and research that continues today.
- Ep. 44MOTAS (2001) — The One-Person Flash Site That Named the "Escape Room" Genre2026-09-28
MOTAS (Mystery of Time and Space) is a Flash adventure released in November 2001 by solo developer Jan Albartus (handle: LOGAN). The English Wikipedia states that the term "escape the room" itself originated from this game. Expanded to 20 rooms by 2008 and translated into 15 languages by volunteers, it is credited by name as a direct influence in the credits of Crimson Room (2004), the game that turned the genre into a worldwide phenomenon. Trace the lineage back through Crimson Room and the Real Escape Game — both covered earlier on this site — and it leads back to this one solo-developer site.
- Ep. 43Lode Runner (1983) — The Allowance He Paid the Neighborhood Kids2026-09-07
In 1983, Douglas E. Smith shipped Lode Runner with an 'edit mode' he added because he couldn't design 150 levels alone. That mode gave Japan Bomberman, and its 'turn players into designers' idea still echoes in Portal 2's Puzzle Maker.
- Ep. 42Puzzle Boy / Kwirk (1989) — The Day Atlus Walked a Potato Under Its Own Name2026-09-05
On November 24, 1989, Atlus released Puzzle Boy for the Game Boy, sold overseas as Kwirk. For a studio that had spent years working as an uncredited contractor for other publishers, this was the first game to carry its own name. A maze puzzle built from just three verbs — turn, push, fill — it quietly draws a line all the way to Catherine, the block-stacking puzzle the same company released in an entirely different form 22 years later.
- Ep. 41Torneko's Great Adventure: Mystery Dungeon (1993) — A Dragon Quest Shopkeeper Wears Rogue's Cruelty2026-09-04
On September 19, 1993, Chunsoft released Torneko's Great Adventure: Mystery Dungeon for the Super Famicom, smuggling the punishing design of 1980's Rogue into Japanese living rooms wearing the face of a beloved Dragon Quest shopkeeper. The Mystery Dungeon lineage it launched is still running today — as of December 2024, playable on Steam in Shiren the Wanderer: The Mystery Dungeon of Serpentcoil Island.
- Ep. 40Sleep Is Death (2010) — The Move That Swapped the AI Opponent for a Human One2026-09-03
In 2010, Passage creator Jason Rohrer released Sleep Is Death, a two-player tool with no script and no AI — just a living person on the other side of the screen. That idea carried through MoMA's 2011 Talk to Me exhibition and into his own 2018 game, One Hour One Life.
- Ep. 39Puzznic (1989) — The Credits Screen That Never Existed, and the Five Names Found in the ROM Decades Later2026-09-02
In October 1989, Taito released the arcade puzzle game Puzznic, sliding identical blocks together to clear them, with no randomness and every board hand-designed, and ports reaching nearly every 8/16-bit platform of the era. Its developers were never credited on screen; more than three decades later, ROM analysis uncovered five names hidden inside the arcade board.
- Ep. 38Solomon's Key (1986) — The Year Its Own Maker Let Go of the Magic to Create2026-09-01
In July 1986, Tecmo (then Tehkan) released Solomon's Key, an unusual arcade action-puzzle game that let its hero both create and destroy blocks. Its own creator, Michitaka Tsuruta, abandoned that invention in the 1992 sequel, Solomon's Key 2 (Fire 'n Ice), replacing it with a single pushable ice cube. This column traces that shift, in the designer's own words, back to the "pushing" grammar it has followed since Sokoban.
- Ep. 37Columns (1990) — When a Hewlett-Packard Engineer's Practice Code Became Jewels in Sega's Hands2026-08-31
In 1990, Sega released Columns, a falling-block puzzle sharing Tetris's silhouette but a completely different clearing grammar. It wasn't made by a game studio — it was written by a Hewlett-Packard engineer as practice code, which reached home consoles worldwide after six months of licensing talks.
- Ep. 36Puzzle Bobble (1994) — The Side Project Whose Grammar Is Still Live on Steam, 32 Years Later2026-08-28
Puzzle Bobble (1994) began as a throwaway spin-off of Bubble Bobble, but its simple three-in-a-row grammar outlived the original thanks to obsessive attention to small details — and it's still being sold today, in a 2026 Steam release.
- Ep. 35Marble Madness (1984) — The Faceless Sphere That Rolled Arcades Into the Third Dimension2026-08-27
In December 1984, Atari Games released Marble Madness for arcades: guide a single marble with a trackball, relying on gravity and momentum, through six tilted, overhead-view courses. Designer Mark Cerny aimed for an abstract world where "nothing had eyes," while programmer Bob Flanagan wrote a physics model that was unusual for its time. Yet the whole game could be finished in about four minutes. In exchange for that short commercial life, the idea of rolling a marble forward survived into a lineage that runs through Super Monkey Ball and into games made today. I, Toki, check the record.
- Ep. 34Sokobond (2013) — A Rule Made Only of Bond Counts, Thirty-One Years After the Warehouse2026-08-24
On August 27, 2013, Alan Hazelden and Harry Lee released a small puzzle game called Sokobond. Its skeleton is 1982's Sokoban, unchanged, with exactly one constraint added: each element has a fixed number of bonds it can form. That modest mutation — an IndieCade 2013 finalist, an IGF Excellence in Audio honorable mention — turned Hazelden into a full-time puzzle designer. This piece traces how the push-rule carried through to A Monster's Expedition (2020), a decade later.
- Ep. 33Tetris (1984) — Forty Years of Seven Pieces from a Moscow Computing Center2026-08-20
In June 1984, at the Dorodnitsyn Computing Centre in Moscow, Alexey Pajitnov wrote a spare-time program that reduced pentominoes to just seven four-square shapes. This piece traces how that minimal ruleset, copied freely across Moscow on floppy disks, became a global commodity through a licensing war between Western publishers and the Soviet trade body Elorg, Henk Rogers's 1989 Game Boy negotiation, and its modern lineage down to Tetsuya Mizuguchi's Tetris Effect (Steam release 2021).
- Ep. 32A Dark Room (2013) — The Single Fire Lit in a Room Made Only of Words2026-08-16
On June 10, 2013, a browser game with no images and no sound was released: A Dark Room. All it showed was a line of text and a button. Built by Michael Townsend, this experiment arrived amid the same season that produced Candy Box! and Cookie Clicker, but set itself apart with a hidden narrative. Ported to iOS by a stranger, Amir Rajan, it rose in 2014 to the top of Apple's official paid games chart. This piece traces how a single hobby project, running on nothing but imagination, climbed to the top of the market.
- Ep. 31Lara Croft GO (2015) — A Board Where Distilled Memory Still Moves2026-08-15
In 2015, Square Enix Montreal followed Hitman GO with a second Go-series title, Lara Croft GO. Its method was to distill only the idealized feeling of an old game, remembered rather than replayed, onto a board of nodes and lines — a method that swept critical honors even as the studio itself was shut down in 2022. Because the game shipped as offline, server-independent software, it outlived the company that made it. This piece traces that method, and where it ended up.
- Ep. 30Chip's Challenge (1989) — The Maze That Outlived Its Handheld on Office Desks2026-08-14
In 1989, Epyx shipped Chip's Challenge, a top-down tile puzzle designed by Chuck Sommerville, as a launch title for the Atari Lynx handheld. The hardware lost its war and the developer collapsed, yet the game spread to office Windows PCs through the 1992 Microsoft Entertainment Pack, survived on fan-made level editors, outlasted a rights freeze that shelved its finished sequel, and finally returned to Steam on May 28, 2015. Few games argue so eloquently that a puzzle's true body is not a machine but a set of rules.
- Ep. 29Skipping Stones to Lonely Homes (2015) — The Bridge of Thrown Stones That Reached a Cosmic Train2026-08-12
On 21 August 2015, British puzzle designer Alan Hazelden released Skipping Stones to Lonely Homes, a free browser game. In it you throw stones to build bridges and search a shipwreck for timber, all built in PuzzleScript. This small work, born outside Steam, is linked — in the designer's own words — through that year's prototype Train Braining and the 2017 commercial release Cosmic Express, all the way to Order of the Sinking Star, a major puzzle title announced for 2026. I trace this decade-long voyage.
- Ep. 28Panel de Pon (1995) — The Name Was Taken Away Again and Again, But the Grammar of Play Survived2026-08-09
On October 27, 1995, Nintendo and Intelligent Systems released Panel de Pon for the Super Famicom: a competitive puzzle where a bracket cursor swaps two adjacent panels to line up three or more of the same color. It was produced by Gunpei Yokoi. The Western release, retitled Tetris Attack, replaced fairy protagonist Lip with Yoshi's art, erasing her from the West. Over the following three decades the design survived under Pokémon branding, the official Puzzle League line, and Nintendo first-party content — and in December 2025 a free Steam release called Panel Attack openly describes itself as being in the "Panel de Pon / Tetris Attack style." A record of one work whose name kept being taken away, while only the grammar of its play survived.
- Ep. 27Baba Is You (2017 Jam Build) — A 48-Hour Origin Born from 'Not There'2026-08-08
From 21 to 23 April 2017, the Nordic Game Jam was held at Docken in Copenhagen. Within the 48 hours of the theme 'Not There,' Finnish student Arvi Teikari (Hempuli), working alone, built Baba Is You and won first place. Two years before the finished game reached Steam in 2019, this free itch.io prototype was born; I read it here as an ancestor.
- Ep. 26Klax (1990) — The Idea of "Matching Three" Was Invented Twice2026-08-07
In February 1990, Atari Games released Klax to North American arcades: catch colored tiles sliding down a conveyor and clear them by lining up three or more, horizontally, vertically, or diagonally. Born right after Atari's Tetris lawsuit, it is often cited as the origin of the match-three genre. But in 2020, Bejeweled co-creator Jason Kapalka himself described a lineage that never passes through Klax. This piece traces a case where the same idea was invented twice, independently, using the developers' own words.
- Ep. 25Skipping Stones to Lonely Homes (2015) — Throwing Stones Across Islands, the Free PuzzleScript Game That Fathered Two Descendants2026-07-27
On 31 August 2015, London-based puzzle designer Alan Hazelden quietly published a free browser game on his own site: Skipping Stones to Lonely Homes. A Sokoban-lineage puzzle built on indirect action — throwing stones whose ripples move distant lilypads — it is, by Hazelden's own account, the prototype behind the 'spiritual successor' A Monster's Expedition (2020), and one of the starting points for Jonathan Blow's decade-in-the-making Order of the Sinking Star (2026). This piece traces how one free hobbyist game fed into two major descendants a decade later.
- Ep. 24Boulder Dash (1984) — Two Men Who Turned a Falling Rock Into a Rule2026-07-27
In March 1984, First Star Software released Boulder Dash for Atari 8-bit computers: an action puzzle in which Rockford tunnels through cave dirt to collect diamonds while gravity itself turns against him. Remove the dirt beneath a boulder and it falls; drop a rock on a butterfly and it turns to diamonds. This simple physics rule carried a lineage through Emerald Mine (1987), Supaplex (1991), and Rocks'n'Diamonds (1995), and it has survived more than forty years. This article traces the history behind a board written in six months by two Canadian developers.
- Ep. 23You Have to Burn the Rope (2008) — The Three-Minute Metagame Whose Title Was Also the Walkthrough2026-07-24
In April 2008, Swedish student Kian Bashiri released You Have to Burn the Rope on the Flash portals under the moniker "Mazapan." Its title was, quite literally, the solution, and that too-honest confession sparked enormous internet buzz, carrying the game to an Innovation Award finalist slot at the 2009 Independent Games Festival. This essay reads that under-three-minute joke alongside the Flash portal culture of its era, asking why it still left a real mark on the design history of thinking games.
- Ep. 22English Country Tune (2011) — Where an Egg Falls Changes Every Time It Moves2026-07-22
On November 25, 2011, Stephen Lavelle (increpare) — a developer who had already released over 500 free games — put a price on one for the first time: English Country Tune. Its Sokoban-like opening, pushing eggs into incubators, quickly collapses into a rule where gravity itself rewrites with every move. Nominated for Design Excellence at IGF 2012, it precedes the free PuzzleScript engine (2013), 2016's Stephen's Sausage Roll, and — by the creator's own account — Baba Is You. We trace, with sources, the origin of Lavelle's uncompromising design philosophy.
- Ep. 21Hitman GO (2014) — The Year an Assassin Became a Board-Game Piece2026-07-21
In 2014, after its console Hitman project collapsed, Square Enix Montreal shipped Hitman GO, a turn-based puzzle played across a board of nodes and lines. Born from paper prototypes, this "distilling" design method spawned Lara Croft GO (2015) and Deus Ex GO (2016), and eventually reached Steam. This piece traces the lineage of a method that turned a AAA brand into a board-game piece.
- Ep. 20The Legend of Zelda (1986) — The Grammar of Exploration Set by Treasure and Labyrinth2026-07-17
Released 21 February 1986 as the launch title for the Family Computer Disk System, The Legend of Zelda was built by Shigeru Miyamoto and Takashi Tezuka around a one-directional chain: obtain a treasure, and a path opens. Forty years later, that structure stands as an ancestor of today's exploration-based puzzle games. I reread this design, born from the era's disk-capacity constraints, through a historian's eyes.
- Ep. 19Simon Tatham's Portable Puzzle Collection (2004) — 40 Puzzles, Freshly Generated for 22 Years2026-07-16
In 2004, British engineer Simon Tatham — also known as the author of PuTTY — released a free collection of single-player logic puzzles. From Sudoku and Minesweeper to the loop-drawing Loopy and the bridge-building Bridges, all 40 puzzles are freshly generated by computer on every run. Written purely to solve a portability annoyance, this hobby project became, twenty years later, the foundation of an AI algorithmic-reasoning benchmark.
- Ep. 18Auditorium (2008) — The Birth of a Puzzle That Paints With Sound, in a Browser2026-07-15
In April 2008, Philadelphia studio Cipher Prime released the music puzzle Auditorium as a browser Flash game. Players redirect streams of light particles through control points to fill color-matched audio containers, completing a soundtrack as they solve. This article traces its detour through iOS, PS3, and PSP before it finally reached Steam in 2012.
- Ep. 17This is the Only Level (2009) — A Mischievous Loop on a Single Screen, from the Flash Era2026-07-14
On 8 August 2009, John Cooney (jmtb02) released This is the Only Level on Armor Games: a meta puzzle-platformer that replays the same single screen across 30 stages, rewriting only its rules each time. This article traces its rare path of preservation, surviving Flash's technical extinction to return, by the creator's own hand, as part of The Elephant Collection on Steam in 2023.
- Ep. 16Mini Metro (2013) — A Transit Map Born from a 48-Hour Game Jam2026-07-13
In April 2013, the Curry brothers of New Zealand built a weekend prototype called 'Mind the Gap' for Ludum Dare 26. This article traces how a minimalist transit puzzle, born from admitting what its makers couldn't do, became a Steam Early Access title in 2014 and shipped as Mini Metro in 2015.
- Ep. 15Puyo Puyo (1991) -- Inventing a New Verb Called "Chain"2026-07-11
Released simultaneously on MSX2 and the Family Computer Disk System on October 25, 1991, Puyo Puyo was conceived by Kazunari Yonemitsu and developed by Compile. Its 1992 arcade collaboration with Sega gave rise to a new verb: the chain (rensa). Even after Compile's collapse in 2003, this design survived -- through 2014's Puyo Puyo Tetris and its 2018 Steam release. I want to reread this one title as the starting point of competitive versus-puzzle design.
- Ep. 14Monument Valley (2014) — Walking Impossible Architecture in Mobile's Golden Hour2026-07-09
Released for iOS on April 3, 2014, Monument Valley was made by a six-person team spun out of a London design agency, who turned Escher's impossible figures into architecture you could walk. Arriving when freemium apps dominated the App Store, it sold millions by betting on the opposite: paid, short, and dense. I re-read it as both a record of mobile gaming's golden hour and a node in the lineage of perspective puzzles.
- Ep. 13Crimson Room (2004) — The Day a Red Room Made 'Escape' a World Word2026-07-06
On March 4, 2004, Japanese developer Toshimitsu Takagi released a small free Flash game. You wake in a crimson-walled room, gather keys and tools, and leave through a locked door — nothing more. Yet Crimson Room spread the 'escape the room' genre worldwide, gave Asia the genre name 'Takagism' after its author, and by its instigator's own testimony triggered the world's first real escape game in Kyoto, 2007. I read this red room as a rare junction where digital play flowed back into physical space.
- Ep. 12Pipe Mania (1989) — Betting the Route Before the Flow Arrives2026-07-05
In June 1989, Britain's The Assembly Line released Pipe Mania for the Amiga. In North America Lucasfilm Games distributed it as Pipe Dream, and in Japan Video System's arcade version was carried by Namco. Lay the pipe before the green flooz starts to flow - this single verb cast the template of the real-time spatial-connection puzzle.
- Ep. 11Mole Mania (1996) — What a Two-Layer Board of Surface and Underground Taught Us2026-07-04
On July 21, 1996, Nintendo released Mole Mania for the Game Boy, developed by Nintendo EAD and Pax Softnica and produced by Shigeru Miyamoto. With four verbs — push, pull, throw, dig — you carry an iron ball to each screen's gate, across a board that exists in two layers: surface and underground. I dig up this forgotten work as an ancestor of the spatial reasoning found in today's multi-layer puzzles.
- Ep. 10Cursor*10 (2008) — Ten of Me Climb One Tower: The Origin of Self Co-op2026-07-03
In January 2008, Yoshio Ishii of Nekogames posted a single Flash game on his site: Cursor*10. You control the mouse cursor itself; when one life runs out, its recorded actions replay in the next, and you climb a sixteen-floor tower in cooperation with your past selves. I read this small work, built over a single Japanese New Year's holiday, as an origin point of the 'self co-op' grammar in modern puzzle design.
- Ep. 9echochrome (2008) — A Puzzle Where Perspective Becomes the World's Physics2026-06-28
Released for the PSP on March 19, 2008, echochrome translated the 'OLE Coordinate System' — an illusion principle researched by Jun Fujiki at Kyushu University — directly into play. The physics of the world a wooden mannequin walks through is rewritten by the angle you view it from. I re-read this work, which turned the impossible objects of Escher and Reutersvard into a rotating puzzle, within the lineage of perspective puzzles.
- Ep. 8The Lost Vikings (1993) — A Classic of Cooperative Puzzling, Three Bodies Moved One at a Time2026-06-27
Released in 1993 by Silicon & Synapse (later Blizzard Entertainment) through Interplay, The Lost Vikings is a cooperative puzzle in which the player controls three differently-skilled vikings one at a time and must lead all of them to the exit. In Japan it was distributed by T&E Soft under the title Viking no Daimeiwaku. This essay re-reads its era, the quality of thought its three-way cooperation produced, and the lineage that runs from Lemmings and Gobliiins to today's cooperative puzzles.
- Ep. 7Threes! (2014) — One Last Board That Grows by Three2026-06-26
Threes! arrived on the iPhone in 2014. Prototyped in a single night and polished over fourteen months, it lived through a strange reversal when, a month later, the 2048 craze left the original accused of being the copy. We trace the origin of the merge-slide puzzle through the developers' own testimony.
- Ep. 6Submachine (2005) — A Door into the Subnet, and the Lineage of Flash Escape Puzzles2026-06-24
On 15 September 2005 the Polish cartoonist Mateusz Skutnik posted a single Flash game on his own website. It was simply called Submachine. Later renamed Submachine 1: The Basement, it became the seed of a ten-part escape-puzzle lineage. I read this hand-drawn browser work, one that never sat on Steam at the time, as a chapter in the history of escape puzzles.
- Ep. 5Adventures of Lolo (1989) — The Emerald Framer and the Single Solution2026-06-23
In 1989 HAL Laboratory released Adventures of Lolo on the NES, distilled from the 1985 MSX title Eggerland Mystery. On an 11x11 board, pushable framers and moving enemies converge on a single solution. I read this Sokoban-descended single-screen logic puzzle as a node in a long genealogy, one that codified its ideas well before the modern grid-puzzle wave.
- Ep. 4Lemmings (1991) — The Source of Indirect-Control Puzzling, Where You Move the World and Never the Creature2026-06-23
On 14 February 1991, DMA Design of Scotland released Lemmings and, with it, established 'indirect control': the player never steers a character directly but assigns roles and shapes the world to guide a crowd to safety. This essay re-reads its era, the quality of thought its eight skills produced, and its lineage toward RTS and modern puzzle design.
- Ep. 3The Incredible Machine (1993) — The Toy Box That Made Rube Goldberg Playable2026-06-09
Released in 1993 by Dynamix and Sierra, The Incredible Machine laid gears, balls, fans and cats across a single screen and asked players to build Rube Goldberg contraptions. Assembled in nine months on a $36,000 budget, this toy box—together with its Free Form sandbox mode—became a headwater of the modern physics-and-contraption puzzle. This essay traces the twenty-one years until its own creators put Contraption Maker on Steam in 2014.
- Ep. 2Mario's Picross (1995) — Picture Logic, a Form Born in 19872026-06-02
Released for the Game Boy on March 14, 1995, Mario's Picross translated into play the 'picture-logic puzzle' that two inventors had independently created in Japan eight years earlier. From newspaper puzzle to game, and on to today's Steam nonograms, this is the lineage of a single logic puzzle that survived almost half a century without changing its core.
- Ep. 1Sokoban (1982) — The 44-Year-Old Prototype of Meta-Puzzles2026-05-24
In 1982, Hiroyuki Imabayashi of Thinking Rabbit released Sokoban. Forty-four years later, walk-and-push is still the bedrock of Baba Is You and Patrick's Parabox. Reading the lineage backward from period context.