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Game library / M.A.S.S. Builder
M.A.S.S. Builder
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Steam

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.

Released · 2025-09-14

At a glance

About this game

Core game information and the store records it came from.

Title
M.A.S.S. Builder
Content
Game
Release date
2025-09-14
Publisher
Sekai Project
Platforms
Windows
Steam Deck
Playable Valve's compatibility rating
Connected stores
1
Steam Steam source details
Store title
M.A.S.S. Builder
Product ID
956680
Developer
Vermillion Digital
Publisher
Sekai Project
Store platforms
Windows
Source checked
2026-10-18 15:26 UTC

Open official store page ↗

How you can play

Features and tags

Select a feature to find other games that have it.

Store tags

Genres

  • Action
  • Indie
  • RPG
  • Strategy

Categories and genres from the Steam store, observed 2026-10-18. Store tags from Steam, as players and the store apply them.

Compare & explore

One game, connected stores

Each store keeps its own prices and observations. We prefer the latest recorded EUR price for Europa. When the displayed currency differs from the store amount, a separate approximate value may use the latest available ECB reference rate.

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Lumiri price context

Recorded price comparison

Matching store titles. One currency. One market.

EUR SE

Lowest recorded amount

24.50 EUR

Steam

Recorded 1 day ago

Difference between stores

—

One comparable store. A difference needs another matching store price.

Distance from observed low

At observed low

Steam listing only. Low: 24.50 EUR.

Last seen
Newest included record

1 included price record from 1 store · 1 linked listing

See the 1 included observation
How this comparison works

Only original EUR amounts recorded for SE and matching titles linked to this game are compared. Edition words and numbers must match. Other editions, source-market fallbacks and currency estimates are excluded.

These are recorded observations. Check the store for the current price, availability and included content. Historical lows belong to the named listing in this market and reflect the history Lumiri GameDB has collected.

Player activity

Observed Steam player history

Latest 1,000 points at most. Bucket averages; the first bucket is included in full. Summary averages are approximate.

Last observed Steam players
9
2026-10-18 16:41 UTC
Observed peak · 1y
9
Within the displayed history
All-time observed peak
9
· since Lumiri started observing
Average players · 1y
9
1 local samples · approximate for grouped data
First signal received

9 players observed

Observed player history is starting. The trend chart will appear automatically after the next collected sample.

View exact player observations
  • 2026-10-18 00:00: 9 average players

Observed by Lumiri GameDB during 1y. Times are UTC. Lines connect observations; gaps are not measured.

Open full player history

  • Samples: 1
  • Minimum: 9
  • Maximum: 9
  • Average: 9
Recorded prices

Price history · Steam

EUR observations for market SE. History belongs to the selected store listing; regional prices and taxes may differ.

Historical low observed by Lumiri GameDB: 24.50 EUR, last seen

First recorded price. More observations will build the price history.

View 1 recorded prices
  • 2026-10-18 15:26: 24.50 EUR

Prices observed by Lumiri GameDB in EUR.

Catalogue activity

Recent changes

Prices, release dates and store listing updates we detected. Repeated store refreshes are grouped.

No changes detected yet. Price and release updates will appear here.