
Welcome to Mech Builder- a relaxing puzzle game inspired by Model building(gunpla). You will experience the relaxing process of building a model kit with complete freedom with over 70+ puzzles.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0/day in the week to Sep 1 → 0.14/day in the week after.
Reviews, worldwide (the counter carries no country): 6.2/day in the week to Jul 17 → 0.14/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,400 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
Welcome to Mech Builder- a relaxing puzzle game inspired by Model building(gunpla). You will experience the relaxing process of building a model kit with complete freedom.
Cut out, assemble, paint, and then customize your models! Build mechs, waifus, armors, figures, and so much more.
Building all the kits will take around 7-9 hours of your time.
Finishing time trial will take around 2-3 hours.
Kitbash mode has endless repeatability.
All models and pieces have been carefully crafted for a relaxing experience.
Features
70+ model kits to build
Total freedom to assemble the models as you prefer
Unlock kitbash mode to make your own models with all the pieces
Unlock time trial to challenge yourself against the clock
Build mechs, waifus, armors, figures, and so much more
Genres
Engagement
Reviews
Themes across 49 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
me siento engañado, ocultaron que utilizaron IA generativa en los diseños cuando el juego fue publicado y se revelo tiempo despues, no es tanto por usar IA, si no que lo ocultaron ya que la propia pagina de Steam tiene speedpaints, pero ya mintieron una ves, nada asegura que no hay mas mentiras
Relaxing and simple
Very relaxing model builder
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
This and every other Pro feature is free until October 20, 2026. A free account is all it takes.
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, French, Italian, German, Simplified Chinese, Spanish - Latin America, Japanese*languages with full audio support
Hours played at review time, across 49 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
Great building chill game, I wish they made this for mobile or download able on my phone so I could build while I relax on my break or when Im out waiting for something.
No time restraints, relaxing music and the ASMR clicking of pieces snapping into place. It's like doing a jigsaw, only with defined shapes and an instruction manual. Different categories of mechs, clearly inspired by every geeky IP going. They come in blocks of five which is just right for a single session. And at the end of it all you get to organise them on your increasingly cluttered shelves like a true collector.
Solid game if you're into kit building; 10/10
A relaxing game to play while watching a stream or just to unwind
On one hand, the actual clicking together and "building" the mechs is satisfying, and a good way to pass the time if you like this kind of thing. However, I think the biggest issue is just... the designs. All of them are derivative, by nature, so I don't fault it for that - my issue is that some of the designs just aren't very GOOD. Some sets don't particularly seem to represent the series they are ostensibly drawing inspiration from very well, but overall I think a lot of these are designs that wouldn't make good models, which harms the appeal of a game about making models. Some pieces attach in ways that seems to contradict their shape, and the implied articulation for some models is baffling. Maybe I'm nitpicking. Particularly the "mecha core" series bothers me. The linework is incredibly sloppy, with colour consistently leaking out of the linework. It looks cheap and shoddy. Between this and the incredibly vague disclosure that AI is used in "some assets" there is an air of laziness surrounding it. I would expect a small game made to emulate a niche hobby would show a little more reverence for the art of the hobby - this just feels cheap. More on par with a flash dressup game from 10+ years ago than it is with the actual hobby itself. If the dev actually cared about this being a love letter to the hobby, AI generated designs would not have been allowed to stay in the game - part of the magic of assembling gunpla is the knowledge that somebody, a TEAM of somebodies, worked together to create it for you to do so. AI dilutes this, because it removes effort in favour of rapidly reaching a lazily imagined "end result." I can't recommend it. I can't refund it, either, sadly, but I might save someone else that issue.
Very relaxing
Un jeux incroyable qui comble mon besoin de gunpla !
Players by region
Where this game's players are, estimated from review languages.
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