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Modulus Game Cover

About Modulus

Modulus is a single player open world city builder game with a science fiction theme. It was developed by Happy Volcano and was released on April 2, 2026. It received very positive reviews from players.

Modulus is a factory automation game where you cut, color, stamp, and assemble 3D building blocks. Design and optimize sprawling factories with creative freedom to efficiently fulfill the orders of the Grand Neural Network.

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Reviews

92%Audience ScoreBased on 477 reviews
gameplay17 positive mentions
grinding24 negative mentions

  • Engaging and unique factory automation game that blends puzzle-solving with traditional factory building mechanics.
  • Relaxing and chill gameplay with no enemies, resource limits, or building costs, enabling creative freedom and experimentation.
  • Excellent quality-of-life features like easy building, copy-paste, smooth controls, and efficiency tools that make building and optimizing enjoyable.
  • Limited build space due to small islands and terrain obstacles restricts scalability and can lead to repetitive redesigns.
  • Progression and tech tree pacing can feel grindy and disjointed, with speed upgrades often forcing large rebuilds rather than smooth evolution.
  • Logistics and UI have some usability issues, including cumbersome miner setup, freight management difficulties, and lack of better production overview tools.
  • gameplay

    54 mentions Positive Neutral Negative
    31% positive mentions, 63% neutral mentions, 6% negative mentions

    The gameplay is praised for its innovative and satisfying blend of shape-cutting puzzles, factory automation, and resource management, offering a unique twist within the genre. While progression can feel repetitive and some late-game mechanics like painting and cooling introduce added complexity or grind, the core loop remains engaging and rewarding for many players. Overall, it combines relaxing yet deep mechanics with quality-of-life features, making it a polished and enjoyable experience for automation and puzzle fans alike.

    • “For the first few hours, I thought it was too easy (coming from somebody who played way too much Factorio) - but getting into the midgame, the mechanics and difficulty ramped up in a deeply satisfying way.”
    • “To summarize, I like the main gameplay loop: shape puzzle building, ratio optimisation and macro supply management.”
    • “The core mechanic of building the modules is also very fun as you find more efficient ways to create the required pieces, and having everything run smoothly is so rewarding.”
    • “The gameplay loop gets tedious after a short time.”
    • “Most automation games keep adding mechanics that keep the game feeling fresh or new, but each tier just felt like more of the same.”
    • “They're either in tooltips, or hidden in control settings, and the tutorial does not bring them up (it has you place miners, why doesn't it make you use the pass-through mechanic?).”
  • optimization

    38 mentions Positive Neutral Negative
    39% positive mentions, 53% neutral mentions, 8% negative mentions

    The game's optimization aspect is praised for its engaging and addictive puzzle-like factory and production line management, emphasizing iterative improvement, space efficiency, and ratio balancing without traditional resource costs. Performance is generally smooth and well-optimized on most hardware, though some users report issues on Linux and handheld devices when scaling up large factories. Overall, the optimization gameplay offers satisfying problem-solving and scalability, though late-game performance and replayability may be limited.

    • “The puzzle aspect of finding a solution to build a module; space constraints mean scaling requires thoughtful optimization; excellent sound and a pleasant graphic style; a tech tree and XP system that provides more and more scalability; and a challenging and clear end goal, which isn't always the case in factory games.”
    • “Every time you unlock new tech there are new better ways to solve old problems, it's very optimized for problem solving and easy to use the tools to reconfigure and rebuild your factory.”
    • “Highly recommend for people who enjoy iterative development and engineering optimization.”
    • “I can say this game was great fun as someone who plays a lot of other factory games, however be warned that there is not a lot of replayability, the end game can be a little of a drag as you just watch bars fill up once you set up everything, and the performance is not great once you have 10 or so islands with major factories; had my game crash about 3 times, and the save and quit action would freeze the game for over 15 minutes at times, but never lost progress.”
    • “Only real complaint is it's pretty poorly optimized on Linux with frequent stuttering and crashes even in the early game.”
    • “Performance - it has about 5-10fps on my handheld where similar games usually have 300+ fps.”
  • graphics

    36 mentions Positive Neutral Negative
    50% positive mentions, 42% neutral mentions, 8% negative mentions

    The game features a charming and distinctive voxel art style that is both aesthetically pleasing and beginner-friendly, with smooth performance even on modest hardware. The graphics emphasize a calm, cozy atmosphere that complements the relaxing gameplay and creative factory-building, though occasional optimization is needed on lower-end devices. Overall, the visuals receive strong praise for their beauty, clarity, and contribution to a peaceful, engaging experience.

    • “First off this game is gorgeous; the art style is amazing, worth playing just to look at it.”
    • “Beautiful voxel art style and the building aspect with voxels is very cool.”
    • “Graphics look stunning, sound is okay, you don't really notice it which is the best kind of sound for factory builders, and the mechanics and progression is deep and fun, definitely worth a buy.”
    • “Little satisfaction in becoming invested in aesthetics - constant need for optimization always takes priority.”
    • “Now, this shows that I'm playing it on Steam Deck, which to be fair, I am - and I had to drop the graphics settings way down, but that's mostly because I'm using my Steam Deck while connecting it to a monitor/keyboard/mouse.”
    • “Mind you this was in creative mode, right out of the box with an empty world and on the 'low' graphics option (which didn't really do anything).”
  • grinding

    25 mentions Positive Neutral Negative
    4% positive mentions, 0% neutral mentions, 96% negative mentions

    Grinding in the game becomes increasingly tedious, especially in the late game where optimization and rebuilding are required without clear meta-information or efficient tools. Resource gathering and scaling often feel slow and repetitive, leading many players to resort to passive play or extended grinding sessions. While early progression is enjoyable, the accumulation of slow, repetitive tasks and cumbersome building management detracts from the overall fun.

    • “Because the game completely lacks general statistics and meta-information—like production per minute, efficiency tracking, or total resource counts—the process of optimizing and rebuilding your factory becomes incredibly tedious later on.”
    • “Progression starts off exciting, but once you hit blue hypercube requirements, it can start feeling grindy fast.”
    • “There are also balancing issues, some buildings are just way too slow (like painters), which I think they do to push you to finding clever ways around it (like making huge 8x8x8 cubes and painting those) but again, it just ends up being grindy instead of fun.”
  • music

    11 mentions Positive Neutral Negative
    36% positive mentions, 37% neutral mentions, 27% negative mentions

    The music in the game is generally described as calming and relaxing, complementing the peaceful and charming atmosphere. While some players appreciate the soothing soundtrack as ideal for a stress-free experience, a few prefer more upbeat music or choose to play their own tunes in the background. Overall, the music is praised for enhancing the game's aesthetics and mood without becoming repetitive.

    • “Modulus is a charming yet calm automated factory game with simple controls and calming music.”
    • “On the one hand, the game has everything I love about it and enjoy playing: beautiful visuals, relaxing music, puzzle-solving, creative freedom, some story/narrative, and a stress-free experience.”
    • “Music and sound are excellent and can't get boring even after hours and hours.”
    • “I wish there was some background music, or maybe my old ears just don't notice it.”
    • “No real music, which is fine because I prefer playing my own music in the background.”
    • “My only mild dislike is the music, only because I prefer more upbeat music when playing strategy games.”
  • story

    9 mentions Positive Neutral Negative
    33% positive mentions, 34% neutral mentions, 33% negative mentions

    The story in the game is relatively short and less involved compared to similar titles, serving mainly as a brief tutorial before transitioning into sandbox gameplay. While some players feel it could be more fleshed out and humorous, others appreciate the balance of light narrative with creative freedom and side challenges. Overall, the story provides a relaxed, low-pressure framework rather than an extensive or deeply immersive plot.

    • “Surely, it will not produce several-hundred-hours factory cities like in Factorio or several-thousand-hours astonishing megabases like in Satisfactory, but it makes its relatively shorter storyline just right.”
    • “On the one hand, the game has everything I love about it and enjoy playing: beautiful visuals, relaxing music, puzzle-solving, creative freedom, some story/narrative, and a stress-free experience.”
    • “Really like the challenges that you can do in between the main quest of the game.”
    • “"Story" mode is just a short tutorial followed by sandbox with a tech tree.”
    • “I get the reason they chose to obscure things, to try and add some kind of story to the game, but it isn't worthwhile.”
    • “My only complaint is that it could benefit from a more fleshed out story, and some humor.”
  • stability

    4 mentions Positive Neutral Negative
    0% positive mentions, 0% neutral mentions, 100% negative mentions

    Stability is mixed, with some users experiencing occasional glitches and frequent freezing issues, particularly in late game. The lack of a quick save feature adds frustration, requiring manual saving through menus. Overall, while not plagued by major bugs, the game's stability could be improved for a smoother experience.

    • “I like the idea but it's hard to recommend it for a simple reason: it freezes a lot, and on top of that there is no quick save keybind so you have to keep going into the menu, click save, confirm overwrite.”
    • “There were some glitches in late game (I have filed reports with the devs), but I enjoyed it for the most part.”
    • “Not sure in any case I wasn't going to spend time troubleshooting.”
  • replayability

    4 mentions Positive Neutral Negative
    50% positive mentions, -25% neutral mentions, 75% negative mentions

    Replayability is somewhat limited due to repetitive early gameplay and a single handcrafted map, making the experience best suited for one thorough playthrough. However, creative and free build modes add value for extended tinkering, and the game can provide dozens of hours of enjoyment despite some performance issues late-game.

    • “And the added free build and creative modes give great replayability for tinkering and refining.”
    • “I think replayability may be a tad less than that of its ilk, being a single handcrafted map where the start feels like it's going through the same motions every run, but the game definitely hits the right spots within its stride, which should last dozens of hours for that one perfect run.”
    • “Overall, I do recommend it for only a single playthrough, so make sure the price you're paying for the game is worth it for a game with limited replayability.”
    • “I can say this game was great fun as someone who plays a lot of other factory games; however, be warned that there is not a lot of replayability. The end game can be a little of a drag as you just watch bars fill up once you set up everything, and the performance is not great once you have 10 or so islands with major factories. The game crashed about 3 times, and the save and quit action would freeze the game for over 15 minutes at a time, but I never lost progress.”
    • “I think replayability may be a tad less than that of other games in its genre, being a single handcrafted map where the start feels like it's going through the same motions every run, but the game definitely hits the right spots within its stride, which should last dozens of hours for that one perfect run.”
  • humor

    3 mentions Positive Neutral Negative
    100% positive mentions, 0% neutral mentions, 0% negative mentions

    The humor in the game is minimal or lacking, with users noting it could benefit from more comedic elements to enhance the experience. Overall, the humor is not a prominent or memorable feature.

  • atmosphere

    2 mentions Positive Neutral Negative
    100% positive mentions, 0% neutral mentions, 0% negative mentions

    The game's atmosphere is described as relaxing, peaceful, and comfortable, creating an unusual but enjoyable experience. Its unique visuals further enhance the overall ambiance.

    • “Modulus is a very relaxing, atmospheric, and comfortable factory builder game to the point it feels very unusual.”
    • “The atmosphere is peaceful, and the visuals are very unique.”
  • emotional

    1 mentions Positive Neutral Negative
    100% positive mentions, 0% neutral mentions, 0% negative mentions

    The game offers a calming, meditative experience that is especially beneficial for players with OCD, helping to alleviate mental fog and emotional clutter while teaching engineering principles. Its emotional impact is both soothing and intellectually engaging.

    • “Great game for people who have OCD, seriously, it is a very well-designed meditative experience that not only teaches you principles of engineering but also helps you clear up mental fog and emotional cluttering.”
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Play Times

100h Median play time
100h Average play time
100-100h Spent by most gamers
*Based on 1 analyzed playthroughs
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Frequently Asked Questions

Modulus is a open world city builder game with science fiction theme. Common tags for Modulus include indie, trading, relaxing, building, base building and others.

Modulus is available on PC and Windows.

On average players spend around 100 hours playing Modulus.

Modulus was released on April 2, 2026.

Modulus was developed by Happy Volcano.

Modulus has received very positive reviews from players. Most players liked Modulus for its gameplay but disliked it for its grinding.

Modulus is a single player game.

Similar games include shapez 2, shapez, Alchemy Factory, Factory Town, Outworld Station and others.