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coincidence.games
Coincidence
@coincidence.games
Coincidence is a cooperative game studio created by ex-Zachtronics developers. Zach Barth is no longer teaching high school and is making games again.
Bonus Puzzle #10 - DESIGNER'S NOTEBOOK

... which is actually not a puzzle, but a set of 12 new puzzles, most of which require you to design a production line able to build one of two different products using conditional inputs and commands. It's challenging!

steamcommunity.com/games/227549...
September 22, 2025 at 6:48 PM
Bonus puzzle #9 - TOY CASH REGISTER

"Get kids started early on understanding the transactional nature of modern life! This toy cash register includes a light-up display and a working cash drawer. It's all about the Yukichis (Benjamins)!"

store.steampowered.com/app/2275490/...
September 15, 2025 at 6:42 PM
Bonus puzzle #8 - SLOT CAR TRACK

"Even though it was clear by the late 80s that video game racing would gain popularity over the old hobby of slot cars, someone at Matsuzawa had enough of a soft spot for it to approve the release of this track."

store.steampowered.com/app/2275490/...
September 8, 2025 at 6:52 PM
Bonus puzzle #7 - DOLLHOUSE KITCHEN

"This kids' kitchen playset originally included real heating elements along with realistic flame and smoke effects, but those features were nixed before it went into production due to safety concerns."

store.steampowered.com/app/2275490/...
September 1, 2025 at 8:26 PM
Bonus puzzle #6 - BOOMBOX

"Bring the beats with Matsuzawa's biggest boom box to date! The whopping twelve D batteries it requires will definitely set you back some cash, but the volume that enables will guarantee you never lose another boom box battle!"

store.steampowered.com/app/2275490/...
August 25, 2025 at 8:43 PM
This puzzle was inspired by a real 1980s chess computer that I found at a thrift store while we were working on Kaizen. Even on the absolute easiest difficulty, none of us were able to beat it...

UNTIL TODAY! What a coincidence! Good work, Jay!
August 18, 2025 at 8:29 PM
Bonus puzzle #5 - CHESS COMPUTER

"The Matsuzawa ENDGAME was an entry-level chess computer intended to introduce children and neophytes to the world of chess. But sales faced headwinds because nobody could beat it, even when set to the lowest difficulty."

store.steampowered.com/app/2275490/...
August 18, 2025 at 8:29 PM
Bonus puzzle #4 - ELECTRIC GUITAR!

"Combining the best of analog and digital into a single instrument, the Matsuzawa Grendel MaxTar included a built-in amplifier and effects unit. Plans to add oscillators and a step sequencer were shelved, however."

store.steampowered.com/app/2275490/...
August 12, 2025 at 6:04 PM
Bonus puzzle #3 - ARCHERY TARGET!

"After an unsuccessful foray into developing new building materials, the Matsuzawa team realized its wood fiber composite was perfect for use in archery targets and dart boards. Thus, the sporting goods division was born!"

store.steampowered.com/app/2275490/...
August 4, 2025 at 6:17 PM
Bonus puzzle #2 - SYNTHESIZER!

"The battery-powered Matsuzawa Grendel let keyboard players jam with the music anywhere, anytime. It was praised for its eight realistic built-in voices and four-note polyphony, but some criticized the small number of keys."

store.steampowered.com/app/2275490/...
July 29, 2025 at 12:40 AM
Weekly bonus puzzle #1 - SUPER DEFENDER BOT!

"Taking note of Defender Bot's popularity, Matsuzawa released the Super Defender Bot in 1987. It added shoulder-mounted cannons and button-activated sound effects, testing the patience of parents across the world!"

store.steampowered.com/app/2275490/...
July 21, 2025 at 10:31 PM
Most scratch-off games (Scratchees, Nintendo Game Packs) are just games of chance, as the only action a player can take is to scratch off part of the card. I ended up adding elements from logic puzzles to create something like "minesweeper with resources", with genre variations between the games.
June 13, 2025 at 11:13 PM
Kaizen: A Factory Story will be part of PC Gamer's PC Gaming Show!

Tune in for an exciting announcement!

Sunday June 8th
12pm PT / 3pm ET

www.youtube.com/watch?v=YXC7...
June 5, 2025 at 9:47 PM
We made a new physical game!

The Zach Attack! Scratch 'n Solve Puzzle Pack is a collection of six different scratch-off games that combine the deductive thinking of logic puzzles with the risk management of push-your-luck games. Scratch off some serious fun!

www.kickstarter.com/projects/zac...
May 29, 2025 at 6:45 PM
Our second card game, Chemistry Set, is 33% off right now on the Coincidence store. We also still have copies of the second printing of The Lucky Seven in stock! It's all right here:

coincidence.games/store/
February 5, 2025 at 10:46 PM
All pre-orders of Chemistry Set and The Lucky Seven have been shipped!

If you somehow missed this, check them out on our store, where we have a bunch of copies left in stock:

coincidence.games/store/
September 11, 2024 at 10:26 PM
We just got our copies of The Lucky Seven and Chemistry Set and are going to start shipping these out right away!

If you still need to purchase, check out our store:

coincidence.games/store/
September 4, 2024 at 9:18 PM
If you want a copy of Chemistry Set and The Depot but don't want to purchase another copy of The Lucky Seven, I've added a combo package for exactly this on the Coincidence store:

coincidence.games/store/
August 23, 2024 at 6:34 PM
We have a new card game coming out soon called Chemistry Set! It's a quick two-player game about building molecules. You can also play it as a solitaire game.

Info and rules here: coincidence.games/chemistry-set/

Pre-order here: coincidence.games/store/

Shipping in early October 2024.
August 22, 2024 at 8:26 PM