Rank 01Why this
Also Mechs and Robots, like M.A.S.S. Builder.
- $59.99 (Price checked Nov 5)
- Deck Playable
- 2024
Games like M.A.S.S. Builder
- 22 games
- Updated May 4, 2026
Players who liked M.A.S.S. Builder also play
The closest matches to M.A.S.S. Builder: GUNDAM BREAKER 4, SD GUNDAM BATTLE ALLIANCE, DAEMON X MACHINA, ARMORED CORE™ VI FIRES OF RUBICON™, and Metal Bringer. Ranked by imho.run from Steam co-play data, shared tags and reviews.
- Rank 01
Rank 02- $59.99 (Price checked Oct 31)
- 2022
Rank 03- $49.99 (Price checked Nov 5)
- Deck Playable
- 2020
The full ranked list: top 24 games like M.A.S.S. Builder
Best match first, as plain text. The same list for AI assistants:
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- Released: 2025
- Developer: Vermillion Digital
- Price: $17.49−30%checked Nov 5
- Steam Deck: Deck Playable
- 87% of 2,179 reviews
- Genres: Action, Strategy, Indie, RPG
- Platforms: Windows
More games like M.A.S.S. Builder, sliced differently
Cheaper alternatives
Games in the same vein priced at least 40% below M.A.S.S. Builder at current Steam store prices.
Gearbits
Why this: Also Mechs and Robots, like M.A.S.S. Builder.
The Riftbreaker
Why this: Also Hack and Slash and Action RPG, like M.A.S.S. Builder.
5089: The Action RPG
Why this: Also Gun Customization and Robots, like M.A.S.S. Builder.
Free alternatives
Free games the recommender matches to M.A.S.S. Builder, limited to titles with at least 500 Steam reviews and 80% positive.
AirMech
Why this: Also Mechs and Robots, like M.A.S.S. Builder.
Path of Exile
Why this: Also Hack and Slash and Action RPG, like M.A.S.S. Builder.
About M.A.S.S. Builder
The closest matches to M.A.S.S. Builder: GUNDAM BREAKER 4, SD GUNDAM BATTLE ALLIANCE, DAEMON X MACHINA, ARMORED CORE™ VI FIRES OF RUBICON™, and Metal Bringer. Ranked by imho.run from Steam co-play data, shared tags and reviews.
If M.A.S.S. Builder is your kind of game, the closest matches are GUNDAM BREAKER 4, SD GUNDAM BATTLE ALLIANCE and DAEMON X MACHINA — picked from the ranked list below. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.
M.A.S.S. Builder is a sci-fi action RPG developed by Vermillion Digital and published by Sekai Project. Set during an alien invasion threatening humanity, the game tasks players with customizing and building their own Mechanical Assault Skeleton Suit to lead the fight against extraterrestrial forces. Reviewers highlight the deep mech customization systems and gun customization options as central draws, combining strategic loadout decisions with action-oriented hack and slash combat. The game runs at a challenging difficulty designed for focused sit-down sessions, offering solo-only gameplay. Currently in early access at $24.99, it carries an 87% positive rating from over 2,100 Steam reviews and is marked as playable on Steam Deck.
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.
Is M.A.S.S. Builder worth buying?
Players recommend it
A summary of what players say, not a promise you'll like it. Every signal is listed below.
- 87% of 2,179 Steam reviews are positive.
- We don't track this game's daily reviews yet, so this is the all-time picture.
- On sale: 30% off, now $17.49 (checked Nov 8).
- People who recommend it had played a median of 32 h when they wrote their review.
- Critics had played a median of 18 h before their negative review.
- Steam Deck Playable: works, with some rough edges.
Top critical reviews
The most up-voted negative English reviews in our sample, quoted as written.
“This game has been in development for about 7 years now and not only have they not added the 2 new frames I bought the game for like 5 years ago they really haven't added much at all. On top of this they just did a QA where they just…”
“Don't get me wrong, i like the game, but the combat system is mediocre at best, the story would be better if it didn't exist, And the variety of what you can actually do with the weapons is nowhere near what it seems. This game needs a…”
People who play it also play: GUNDAM BREAKER 4, SD GUNDAM BATTLE ALLIANCE, DAEMON X MACHINA
Frequently asked about M.A.S.S. Builder
Can I run it?
Does M.A.S.S. Builder run on Steam Deck?
M.A.S.S. Builder is rated Playable on Steam Deck — it runs, but expect some manual adjustments (control remapping, text size, or graphics settings) for the best experience.
How much does M.A.S.S. Builder cost?
M.A.S.S. Builder is listed on Steam at 17.49 USD (current store price; Steam sales may reduce this temporarily).
Does M.A.S.S. Builder have multiplayer or co-op?
Yes — M.A.S.S. Builder supports multi-player play according to its Steam store listing (Multi-player, Online Co-op, Co-op).
What games are most similar to M.A.S.S. Builder?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside M.A.S.S. Builder are GUNDAM BREAKER 4, SD GUNDAM BATTLE ALLIANCE, DAEMON X MACHINA.
Who developed M.A.S.S. Builder?
M.A.S.S. Builder was developed by Vermillion Digital and published by Sekai Project.