HomeM.A.S.S. Builder
M.A.S.S. Builder
Vermillion Digital · published by Sekai Project · released Sep 15, 2025 · Early Access from Sep 13, 2019 · demo · data updated Oct 24, 2026
by Vermillion Digital, published by Sekai Project
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.
Released Sep 15, 2025 · Early Access from Sep 13, 2019 · Demo available
Steam figures
| Value | As of | |
|---|---|---|
| Steam reviews | Very Positive · 85% positive of 3,732 Steam reviews | Oct 22, 2026 |
| Followers on Steam | No followers data for this game yet | |
| Regular US price | $24.99 | Oct 20, 2026 |
New Steam reviews per month
| Month | New positive | New negative |
|---|---|---|
| Nov 2025 | 11 | 6 |
| Dec 2025 | 4 | 5 |
| Jan 2026 | 7 | 5 |
| Feb 2026 | 2 | 3 |
| Mar 2026 | 9 | 4 |
| Apr 2026 | 8 | 5 |
| May 2026 | 5 | 2 |
| Jun 2026 | 10 | 13 |
| Jul 2026 | 5 | 7 |
| Aug 2026 | 5 | 6 |
| Sep 2026 | 4 | 4 |
Sales estimate
| Copies sold on Steam | 120k – 350k | |
|---|---|---|
| Gross revenue on Steam | $1.4M – $5M before refunds, tax and Steam’s cut | |
| Steam reviews by buyers | 3,732 | Oct 22, 2026 |
| Copies per review | 34–94 |
Estimates are based on an aggregation of industry-accepted conversion formulas. How this is estimated
Tag DNA
| Tag | Share of Steam games |
|---|---|
| Mechs | 1 in 142 games |
| Gun Customization | 1 in 106 games |
| Robots | 1 in 44 games |
| Hack and Slash | 1 in 26 games |
| Futuristic | 1 in 21 games |
| Action RPG | 1 in 18 games |
| Character Customization | 1 in 15 games |
| Shooter | 1 in 10 games |
Games like M.A.S.S. Builder
| Game | Developer | Match | Steam reviews |
|---|---|---|---|
| GUNDAM BREAKER 4 | CRAFTS & MEISTER Co., Ltd. | 68% | Mostly Positive · 3,498 |
| MADNESS: Project Nexus | GIBBING TREE, LLC | 66% | Overwhelmingly Positive · 16,052 |
| MOBILE SUIT GUNDAM SEED BATTLE DESTINY REMASTERED | Bandai Namco Forge Digitals Inc. | 65% | Mostly Positive · 765 |
| Dreadhunter | Trickster Arts | 65% | Mostly Positive · 147 |
| SUNSET SURVIVAL STATION | Illegal Turtle 🐢 | 69% | Positive · 19 |
| Suit Up | Awkward Wolf Studios Limited | 67% | Positive · 11 |
| Mercs Fully Loaded | ByteBomb Studios | 72% | 4 reviews |
| Null Reference Exception | 1nstall | 68% | Positive · 19 |