M.A.S.S. Builder

2025 · Vermillion Digital · Action, Indie, RPG, Strategy

MechsAction RPGCharacter CustomizationRobotsGun CustomizationIndie

Steam reviews:Very Positive85% of 3,734 reviews positive

Best price available

$3.33 at Kinguin

Buy at Kinguin Email me if it gets cheaper

Steam key: you activate it in your Steam account. How to activate it

Price comparison

Region:

4 offers

Region

Kinguin

StandardGlobal

$3.33

Buy

Eneba

StandardGlobal

-87%$3.48

$26.46

Buy

Instant Gaming

StandardGlobal

-84%$4.31

$26.46

Buy

Steam

StandardNorth America

$24.99

Buy

Kinguin

$3.33

StandardGlobal

Buy

Eneba

-87%$3.48

StandardGlobal

Buy

$26.46

Instant Gaming

-84%$4.31

StandardGlobal

Buy

$26.46

Steam

$24.99

StandardNorth America

Buy

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M.A.S.S. Builder: price summary

Right now the cheapest price for M.A.S.S. Builder is $3.33 at Kinguin, 87% less than on Steam ($24.99). We found it in 4 stores: Kinguin, Eneba, Instant Gaming, and Steam. Steam users rate it Very Positive: 85% of 3,734 reviews are positive. Since February 2026, its lowest price on Steam in Europe was €17.15 (March 19, 2026). Steam has discounted it 7 times in that time.

Genre: Action, Indie, RPG, Strategy
Released: September 14, 2025
Developer: Vermillion Digital
Publisher: Sekai Project
Type: Game

Price history

Steam prices in Europe, in euros: the history is recorded on Steam Spain.

Screenshots

About 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.