Modulus

About

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.

+13

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90%

Audience ScoreBased on 245 reviews

gameplay10 positive mentions

grinding12 negative mentions

Relaxed and stress-free gameplay with no enemies, resource costs, or time pressure, allowing players to build and optimize at their own pace.
Unique and engaging 3D shape-based puzzle mechanics combined with factory automation, offering creative freedom and multiple solutions for building components.
Excellent quality of life features such as easy copy/paste, move, and rebuild tools, a clear UI including an efficiency view, and well-designed tech progression that keeps players engaged.

Limited and segmented build spaces on small islands with fixed terrain and resource node placement restrict factory scaling and cause repetitive redesigns.
Progression can feel slow or stagnating with certain upgrades forcing factory rebuilds, and some parts of the tech tree and machinery feel underutilized or unbalanced.
Some interface and quality of life aspects need improvement, including better tutorials, preview tools, conveyor belt controls, build placement options, and clearer throughput information.

gameplay
36 mentions Positive Neutral Negative
28%
64%
8%
The gameplay offers a peaceful, zen-like factory-building experience that emphasizes engineering and puzzle-solving through unique 3D shape manipulation and resource transformation mechanics. It blends familiar automation game elements with innovative twists, providing deep, complex, and engaging challenges without the usual survival stress, though some find it becomes repetitive or overly puzzle-focused over time. Overall, it delivers a polished, relaxing, and thoughtfully designed gameplay loop that fans of the genre will appreciate.
- “Factorio but peaceful and zen-like, removing the dread and discomfort of bug infestation survival and the anxiety of resource scarcity. Instead, it focuses on the building and engineering side of factory games, combining mechanics from Shapez and aesthetics inspired by Industries of Titan. At times, it feels like solving a Rubik's cube, with genuinely entertaining challenges that lead to laughs despite the clean, mechanical look.”
- “The core mechanics of cutting, coring, and combining blocks to create complex 3D shapes is very nicely done.”
- “It has great gameplay and quality-of-life features that allow building and rebuilding without having to manage inventory or material costs.”
- “It's probably not a good entryway into automation games just by the nature of the mechanics and the complexity that emerges from it, and I don't think there is anything the devs really can do to help it.”
- “The paint mechanic can be an absolute pain to balance, and if, for instance, you lack just one belt of paint to finish the current chain, that's an entire additional tech-transversal chain that needs to be built to provide it.”
- “Core gameplay is a little too puzzle-y for my tastes with the shape construction.”
graphics
25 mentions Positive Neutral Negative
52%
36%
12%
The game features a beautiful, voxel-based art style with detailed, well-modeled buildings and a pleasant, relaxing aesthetic inspired by titles like Industries of Titan. It runs smoothly even on basic hardware, offering a chill, stress-free visual experience that complements its creative, laid-back gameplay. Overall, the graphics are polished, beginner-friendly, and perfectly suited to the game's peaceful, puzzle-solving factory building theme.
- “The art style is extremely pleasant and all the buildings are very nicely modeled with lots of detail.”
- “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.”
- “Beautiful voxel art style and the building aspect with voxels is very cool.”
- “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).”
- “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.”
- “Graphics, despite being voxelated, are pretty refined.”
optimization
20 mentions Positive Neutral Negative
30%
55%
15%
The game's optimization is generally smooth and satisfying, running well on basic hardware with stable performance and a user-friendly interface, though it struggles on Linux and performs subpar on handheld devices like the Steam Deck. It emphasizes layout and production efficiency as core gameplay, offering a big tech tree for ongoing optimization without performance issues during play. However, some users note occasional stuttering, crashes on Linux, and lower frame rates on portable platforms.
- “It also runs smoothly even on basic hardware, including Windows; I was sitting around 6GB RAM and the graphics card handles a 60fps frame limiter without the fans turning.”
- “While my factories aren't optimized at all, I can always go back and try to optimize them later whenever I unlock new things in the (very) big upgrade tree.”
- “Building out your production lines, fine-tuning every connection, and watching everything run smoothly is incredibly satisfying.”
- “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.”
- “There are some glaring issues with the optimization in this game.”
grinding
12 mentions Positive Neutral Negative
100%
Grinding in the game is widely viewed as tedious and overly repetitive, with resource gathering and building placement mechanics feeling unnecessarily cumbersome. While tools like copy/paste and blueprints help alleviate some monotony, limited and scattered resource nodes combined with restrictive building mechanics lead to a frustrating experience. Players appreciate the core gameplay but find the lack of meaningful variety or quality-of-life improvements makes extended play feel like an unenjoyable grind.
- “The first ten hours or so were enjoyable but then I realized the core gameplay wasn't really changing and ultimately going further would just lead to more grinding.”
- “Limited resources extractors and factories for color that don't only need color resource but shapes as well, plus the amount of color spent per paint, make grinding extremely tedious.”
- “It's not fun, it's not complex, it's just tedious.”
music
7 mentions Positive Neutral Negative
43%
28%
29%
The music in Modulus is generally praised for being calming and relaxing, perfectly complementing the game's soothing and stress-free atmosphere. While some players prefer more upbeat tunes for strategy games, most find the soundtrack ideal and enjoyable even after extended play.
- “Modulus is a charming yet calm automated factory game with simple controls and calming music.”
- “The aesthetics are beautiful, the music is ideal; I think this might be the perfect factory game.”
- “Music and sound is excellent and can't get bored even after hours and hours.”
- “My only mild dislike is the music, only because I prefer more upbeat music when playing strategy games.”
- “My only mild dislike is the music, only because I prefer more upbeat music when playing strategy games.”
story
5 mentions Positive Neutral Negative
60%
40%
The story is somewhat minimal and obscured, serving more as a backdrop to the gameplay rather than a compelling narrative. Players appreciate the inclusion of side missions and challenges that complement the main quest, enhancing the overall experience without adding stress. Some desire more variety or sandbox elements tied to the story progression for greater replayability.
- “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 as it were.”
- “Plenty of side missions (challenges) so you can do while you build up your datashards.”
- “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.”
- “I would like a sandbox mode where blocks required to progress in the story are a bit mixed and randomized.”
stability
1 mentions Positive Neutral Negative
100%
Users express uncertainty about the game's stability and show reluctance to spend time troubleshooting potential issues.
replayability
1 mentions Positive Neutral Negative
100%
The game's replayability is somewhat limited due to its single handcrafted map and repetitive starting sequences, but it still provides a satisfying experience that can engage players for dozens of hours in pursuit of an ideal run.
humor
1 mentions Positive Neutral Negative
100%
The humor in the game is subtle and situational, highlighted by ironic observations such as the sky-plateau theme lacking expected vertical elements like item elevators or conveyor belts. This dry, understated style adds a clever layer to the gameplay experience.
atmosphere
1 mentions Positive Neutral Negative
100%
The atmosphere is described as peaceful, complemented by unique and visually distinct graphics.
- “The atmosphere is peaceful and the visuals are very unique.”