Home / Games / M.A.S.S. Builder
M.A.S.S. Builder
Commander, customize and build your Mechanical Assault Skeleton Suit (M.A.S.S.) and lead the fight against an alien invasion bent on exterminating the human race. The fate of humanity is in your hands.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.
“I am only recommending this game to those who like building model kits and mech customization. The combat is not good and very janky but the amount of customization you can make in a mech is very satisfying.”
— a player, Steam review · 55 hrs played“This is a good game. But it is just not popular. This title has done something that many other titles failed to do. Give you access to a great deal of customization that allows you to create fan made versions of mecha from popular media, be it animated or just drawn. You can…”
— a player, Steam review · 157 hrs played“Let me start by saying I've very much enjoyed this game. [i](I mean, I've played 510 hours, lol.)[/i] It has some of the best customization I've seen for a mecha game. One of its greatest features by far, is the separation of looks from stats. No clown-suiting, like in so many…”
— a player, Steam review · 510 hrs playedPlayer activity
Monthly average concurrent players. Live count fetched 2026-07-11 13:07 UTC · history via SteamCharts.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
M.A.S.S. Builder Original Soundtrack Now Available On Steam
The original soundtrack for M.A.S.S. Builder is now available on Steam! This soundtrack features 36 tracks by composer, Van Narupai. The download will include both MP3 and FLAC file formats for you to
Post 1.0.0. AMA Answers!
Remember the AMA announcement we had weeks ago? The answers to them are now ready for viewing! Please check them out down below! More answers in the comments section as well, as we exceeded word count
Post 1.0.0. What's Next + AMA Announcement!
We've been hotfixing the 1.0.0 launch of M.A.S.S. Builder all week, hope you all were able to have fun with the things that aren't broken! For now, we'd like to tell you all about what's coming next t
M.A.S.S. Builder Full Release 1.0.0. LAUNCH!
Hello! We're finally ready to announce the M.A.S.S. Builder major update 1.0.0! We're finally out of Early Access into full release with this update, completing the whole M.A.S.S. Builder Campaign sto
M.A.S.S. Builder Full Release Date Announcement
Hello everyone! We have a special announcement instead of a WIP today... It's finally time to say goodbye to Early Access and head into Full Release version 1.0.0 come next week September 14th! It has
Games like M.A.S.S. Builder
From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.
DAEMON X MACHINA
80.4% · 2,576 reviews
shares Mechs, Robots, Third Person Shooter, Post Apocalyptic
SD GUNDAM BATTLE ALLIANCE
79.9% · 1,353 reviews
shares Mechs, Robots, Hack And Slash, Action RPG
Dolls Nest
90.1% · 812 reviews
shares Mechs, Robots, Post Apocalyptic, Futuristic
ARMORED CORE™ VI FIRES OF RUBICON™
93.6% · 50,557 reviews
shares Mechs, Robots, Post Apocalyptic, Futuristic
Mecha Knights: Nightmare
91.8% · 1,235 reviews
shares Mechs, Robots, Third Person Shooter, Post Apocalyptic
The Surge 2
78.9% · 4,145 reviews
shares Mechs, Robots, Hack And Slash, Action RPG
Exoprimal
71.2% · 2,857 reviews
shares Mechs, Robots, Third Person Shooter, Futuristic
Oblivion Override
95.0% · 556 reviews
shares Mechs, Robots, Post Apocalyptic, Hack And Slash
Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-20.
| Genres | Action, Indie, RPG, Strategy |
| Player tags | Early Access · Action RPG · Mechs · Character Customization · Robots · Gun Customization · Indie · Hack and Slash · Sci-fi · Anime · Shooter · Action (SteamSpy community voting) |
| Features | Single-player · Multi-player · Co-op · Online Co-op · Full controller support · Steam Cloud · Family Sharing |
| Languages | English, Japanese, Simplified Chinese, Thai, Traditional Chinese |
| Controller | Full support |
| Estimated owners | 100,000 – 200,000 (SteamSpy) |
| Official site | http://www.v-dgt.com/ |
Minimum system requirements (PC)
Minimum: Requires a 64-bit processor and operating system OS *: Windows 7, Windows 8.1, Windows 10 (64-bit versions only) Processor: Intel Core i5 or better / AMD Phenom II X3 or better Memory: 8 GB RAM Graphics: NVIDIA GeForce GTX 1050 or better / AMD Radeon RX 560 or better Storage: 3 GB available space Sound Card: DirectSound Compatible