Plug and program to match waveforms in this puzzler inspired by synthesizers

An image of synthesizer modules from puzzle game The Signal State.
(Image credit: Reckoner Industries)

Here's a thematic looking puzzler for those of you who love the technical: The Signal State, a logic game that uses the methods inspired by modular synthesizers. In it, you're a machine tech repairing parts in order to rebuild farm equipment to produce necessary food.

To play, you manipulate inputs by connecting cables to inputs and outputs on sets of modules, all with the goal of meeting a certain waveform on each output. It's all about figuring out the logic of how to get from point A to point B using the parts you have available.

It's one of those games that probably scales very much based on how good you are at puzzles and how much understanding you have of the underlying material: In this case, that's modular synthesizers, sound waveforms, and logic. To me, it's a pretty impressive first outing for a new developer entering what is one of the most complex genres in PC gaming—the kind of fiddly logic puzzler with a very specific niche theme. It was made famous by Zachtronics, and some go so far as to call the whole genre "Zachlikes."

It's not very exhaustively reviewed, but The Signal State has very positive reviews for now. Those who dislike it don't seem to dislike the gameplay at all, just finding fault with either the puzzle complexity or the length. You can find The Signal State on Steam.

Contributor

Jon Bolding is a games writer and critic with an extensive background in strategy games. When he's not on his PC, he can be found playing every tabletop game under the sun.

Read more
A toy robot's arms and legs are welded into place as it's assembled
One of the best puzzle game designers is back with Kaizen: A Factory Story, a game about manufacturing Japanese consumer goods during the largest economic bubble in history
Exographer
Exographer is a physics-based platformer with a difference—it's made by an actual particle physicist
A set of colored blocks representing an operating system under construction.
Zach-like automation puzzle game ABI-DOS is available on Steam for free
Heart of the Machine
Heart of the Machine is Crusader Kings for speculative sci-fi nerds, flipping the script on the cult AI War series
ReSetna
ReSetna, the exhilarating post-apocalyptic action-adventure, is available now on Steam
Sabnack, PC-98 puzzle game
This '90s PC game's one-of-a-kind combination of puzzles and RPG heroics was the perfect way to jumpstart my brain for the new year
Latest in Sim
Dwarf Fortress adventure mode art
After 23 years of making Dwarf Fortress, even its creator is still 'terrified' of drowning all his dwarves with aquifers: 'Part of the problem is we are just not good at videogames'
Tarn Adams, who cofounded Bay 12 Games with his brother Zach, talks about their single-player simulation game "Dwarf Fortress" during an interview at their home office in Poulsbo, Washington, west of Seattle, on December 9, 2022. - A cult favorite among indie game fans, "Dwarf Fortress" has been available for purchase on the Steam online store since December 6, a first for this title that has been distributed for free since its debut in 2006. The real-time management game, set in a medieval-fantasy world and involving overseeing a group of dwarves seeking to build a mighty fortress, has climbed to the fourth best-selling weekly title on Steam. (Photo by Jason Redmond / AFP) (Photo by JASON REDMOND/AFP via Getty Images)
Dwarf Fortress' creator is so tired of hearing about AI: 'Press a button and it writes a really sh*tty, wrong essay about something—and they still take your job'
Decorations in TCG Card Shop Simulator
TCG Card Shop Simulator finally adds the ability to decorate our stores, and suddenly all my profits are being spent on adorable Pigni posters
A person on a snowmobile riding a track in the forest in game Sledders.
Powder enthusiasts seem pretty pleased with new physics-based realistic snowmobile sim Sledders
Dean Hall at GDC 2025.
Outer space inspired DayZ's Dean Hall to become a modder and game developer, and now he's making a Kerbal successor called Kitten Space Agency
Bannerlord naval expansion reveal
Mount & Blade 2: Bannerlord is heading to the ocean with a Viking-themed naval expansion this summer
Latest in News
Assassin's Creed Shadows immersive mode - Naoe holding a tanto in her hand as two guards fall to the ground behind her.
Assassin's Creed Shadows' first hotfix addresses stability issues and a photo mode crash
A close-up of a scared young girl's face as she stumbles through the woods, a crown of twigs and flowers upon her head.
CD Projekt says it's not using generative AI on The Witcher 4 because it's 'quite tricky when it comes to legal IP ownership'
A plastic duck dressed like a circus weightlifter
The 5th highest-rated game on Steam in 2022 is back with a multiplayer sequel
A still from a video announcement of Game Informer's return, featuring the magazine's Halo 2 issue.
Game Informer is back from the dead: 'The whole team has returned'
An April Fool's Day Palworld game concept about dating Pals
From Palworld movies to Palworld TV shows: 'Everyone under the sun pitched us every idea you can imagine,' says Pocketpair's communications director
Ciri in The Witcher 4
The Witcher 4 won't be out until sometime in 2027 at the soonest, CD Projekt says