
You’re the designer, engineer and architect if you can imagine it you can create it! Construct robots of any shape or size from eight-legged spider bots to eerie UFO contraptions.
Modeled estimate, not a reported figure. How we estimate →
Prices
Each in the currency that store quoted — not converted: the gap between two rows is the publisher's pricing, not an exchange rate.
14 of 15 markets; the rest we haven't asked for this title, not markets where it is unavailable.
Availability
We put this game to every storefront we collect. A market that answered not sold has told us something about the game; a market we never asked has not, and the two are never drawn the same.
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 10 → 0.71/day in the week after.
About
You’re the designer, engineer and architect if you can imagine it you can create it! Construct robots of any shape or size from eight-legged spider bots to eerie UFO contraptions. Engineer each and every appendage with powerful visual programming letting you dictate the bots every move. When you’ve completed your masterpiece, open the world builder and craft the ultimate obstacle course to push your bot to its limit.

Alone or with fellow inventors, envision your design then make it a reality.

Create a world in which your bots will be challenged. Craft tracks for racing or complex obstacle courses that tease out all those lovely design flaws you didn’t know you had.

Show off your designer skills first-hand with up to three friends. Build worlds together to challenge each other's bots in different obstacles courses and tracks. Or smash each other's creations into metallic pulp (more coming soon).

No friends? No problems. We’ve created a single-player mode with over 100 challenges to test your inventions.

Don’t panic, we don’t expect you to code in C# (we’re doing that). In fact, it’s entirely optional, but if you’re up to the challenge we’ve designed a powerful visual programming tool for you to enhance your creations.

Add (or take) from the thousands of already created bots and worlds hand-crafted by our dedicated fans from all over the globe.

If you want to test the limits of your construction, then drive it off a cliff.
Engagement
Reviews
Themes across 49 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
DO NOT BUY, GAME UNFINISHED AND ABANDONED. This all happened right after I bought it, I am really mad since this game had potential.
if a game is published by team17, you can bet itll be forgotten and abandoned shortly after release. this game is no different. abandoned for years, was hoping for a sign of life, but nope. abandoned.
Abandonware
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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14 on sale1 answered “not sold”0 we did not ask
The 1 “not sold” market is read from the Steam price pass of Aug 21: that day the store answered for this game elsewhere and gave no price there. The 14 priced markets are the same rows as the table above — each the latest price we hold, dated here when it is older than that pass. The 0 marked “not asked” were not put to this store at all — either it has no storefront there or we do not collect it yet, and neither is a statement about the game. A refusal is a refusal on one day; a store can list a title again tomorrow.
Reviews, worldwide (the counter carries no country): 0.14/day in the week to Jul 30 → 0/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 25 chart moves that followed a price cut of more than 20% went a median of 10 places towards #1, and the 2,413 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.
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, French, Italian, German, Spanish - Spain, Russian, Simplified Chinese, Traditional Chinese, Portuguese - Brazil, Japanese*languages with full audio support
Hours played at review time, across 50 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
no updates for years...
Abadoned :\
Abandoned
Such potential but it's sad it died early.
Main Assembly gives creative players a robust set of tools to build and experiment with robots, provided they have the patience to learn its systems through trial and error due to a very limited tutorial.
great engineering game, more complex side though provides alot more freedom with what you can do. If your intrested in engineering, design, or anything related to this i highly suggest you consider getting this game. The controls/UI are a bit odd to use, but not hard to get used to. Some of the rigid 3D parts (like suspension and wheels) feel somewhat lacking in their ability to visually or physically change which can cause things like suspension to stick out of surfaces so they work or wheels to be too small when you change your design or other feature/factor. despite this, im sure there is some work around to this, though i have not found one my self. If you want something that is essentially a super simplified solidworks, id go with this. Though there is other games (such as stormworks) that can be alot more beginner friendly while providing similar freedoms to this game.
i bought this on sale for 1.99 but ive already made some cool stuff within three hours i can definetly see myself putting hundreds of hours into this game i highly recomend hurry up and buy it while its on sale
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
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