Main Assembly
All offers (18)
Compare the platform, region and delivery before you buy.
Standard Edition 16 offers · EU & Global
Main Assembly GlobalActivation keySteamGlobalLowest price€0.23+ service feeView deal
Main Assembly PC Steam CD KeyActivation keySteamGlobal€0.38+ payment feeView deal
Main Assembly (PC) Steam Key - GLOBALActivation keySteamGlobal€0.51+ service feeView deal- Main Assembly EU PC Steam CD KeyActivation keySteamEurope€0.55+ payment feeView deal
Main Assembly (PC) Steam Key GLOBALActivation keySteamGlobal€0.66+ fee possibleView deal
Main Assembly (Global) (PC) - Steam - Digital KeyActivation keySteamGlobal€0.68no Plus, no ProtectView deal- Main Assembly (PC) Steam Key - EUActivation keySteamEurope€0.70+ service feeView deal
- Main Assembly (PC) Steam Key EUROPEActivation keySteamEurope€0.79+ fee possibleView deal
Official store Steam · price for Germany
Steam store pageDirect purchaseSteamGermany€19.99No feeView on Steam
Other regions 2 offers
Sold for Latin America, North America, Asia, the Middle East, Russia or an unspecified region. These keys usually cannot be activated from Germany.
You buy directly from the store. "+ service fee" or "+ payment fee" means the store adds a fee at checkout; you see the final price there before you pay. We may earn a commission when you buy through our links.
Best price over the last 32 days
- Lowest €0.2318 Oct 2026
- Highest €0.3815 Oct 2026
- Today €0.23
The cheapest EU or Global key per day across all compared stores; the dashed line is the Steam price.
Trailer & screenshots
Buy Main Assembly key: current price comparison
Where is the Main Assembly key cheapest?
The cheapest Main Assembly key that activates in the EU currently costs €0.23 at GAMIVO. Keyfinder compares 18 offers from 8 shops for this price. That is 99% less than the Steam price of €19.99. Prices are refreshed hourly; region, edition and any checkout fees are shown on each offer.
What was the lowest Main Assembly key price in the last 32 days?
€0.23 on 18 Oct 2026, for the standard edition that activates in the EU. The highest daily low in that time was €0.38 on 15 Oct 2026; today the cheapest key costs €0.23.
Which Main Assembly keys activate in the EU?
16 offers are marked EU or Global and activate in Germany and the rest of the EU. Keys for other regions are listed separately. The keys on offer are for Steam.
How do I activate the Main Assembly key?
The cheapest key activates on Steam. You redeem it there with the code the shop sends you after you pay.
Is it safe to buy a Main Assembly key from GAMIVO?
Before you pay, check three things on the offer: the region (EU or Global for Germany), the edition and any fee added at checkout. Keyfinder shows all three on every offer. Our GAMIVO check covers who runs the shop, its fees and its regions.
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About Main Assembly
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.
- Developer
- Bad Yolk Games
- Publisher
- Team17
- Release date
- 26 Jan 2021
- Steam
- View on Steam