M.A.S.S. Builder
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About M.A.S.S. Builder
M.A.S.S. Builder is an Action RPG in which you pilot a M.A.S.S. (Mechanical Assault Skeleton Suit) as the commander of a private military company. Unknown beasts from the void, called Quarks, have appeared and wiped out a large part of humanity. The survivors have moved into shelters and turned their technology into weapons as they fight for humanity’s survival across war-torn landscapes and settlements. You take on the Quark threat while building and customizing mechanical suits.
Build your M.A.S.S.
The customization system separates equipment that affects stats from equipment used purely for appearance. All M.A.S.S. parts have no stats, so you can choose how your suit looks without sacrificing stats. You can also combine hundreds of weapon parts to choose how your weapons look and shoot.
Fight the Quarks
Combat is fast-paced, with boosters letting you move around the battlefield and attack through enemies. You fight hordes of Quarks, including giant ones that aggressively hunt you down.
The world
The game’s world contains information about its setting and the struggle against the Quarks.
Frequently asked questions
The best price for M.A.S.S. Builder is $3.45 at Difmark. That is 86% less than on Steam, where it costs $24.99. 9 shops have an offer that activates in your country.
Some are. This page only shows offers that activate in your country; offers for other regions, or with no stated region, are left out. To see the offers for another country, change your country at the top of the page.
Every key we list activates on Steam. Redeem the key there and M.A.S.S. Builder stays in your library for good.
Yes, with a small risk. Publishers create keys to sell in other shops, which is why a key can cost less than in the official store, and once you activate it the game is yours to keep, just like a store purchase. On average 1–2% of keys fail, so check the shop's buyer protection before you buy: the official store does not refund keys bought elsewhere.
The minimum requirements for M.A.S.S. Builder are: Windows 7, GeForce GTX 1050, Intel Core i5, 8 GB RAM, 3 GB storage. It runs on Windows only. The recommended specs are in the System requirements section.
Yes. M.A.S.S. Builder has multiplayer and a single-player mode. It supports online co-op.
Mostly, yes. Valve rates M.A.S.S. Builder as Playable on the Steam Deck: it runs, but may need some manual setup.
Buy M.A.S.S. Builder 86% cheaper than on Steam.
M.A.S.S. Builder is available for 86% less in shops such as Difmark, Kinguin, or Driffle.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.
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