M.A.S.S. Builder

Vermillion Digital · Sekai Project

Released
Sep 14, 2025
Platforms
Last updated
Wishlist on SteamAdd it on the Steam store page. Opens in a new tab.

Updates & announcements

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  1. Developer post

    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 enjoy.

  2. Developer post

    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 in this news posts. Question: I hope to develop more diverse weapons, dual-wiel

  3. Developer post

    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 to M.A.S.S. Builder! Let's get the big disclaimer out first, no, we aren't stoppi

  4. Developer post

    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 story! It has been a long journey up to this point, but it is not the goal, not at

  5. Developer post

    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 been a few years now since we first released M.A.S.S. Builder into the public a

  6. Developer post

    WIP: 1.0.0 New Mission Sneak Peek

    Hello everyone! Today, we're only able to have a short sneak peek of the upcoming mission, but fret not, it's a mysterious and ominous lot to take in! Where in the world is this place, what kind of mission are we assigned to? You'll receive more information come version 1.0.0! An

  7. Developer post

    WIP: 1.0.0 Weapon Attachment System In Depth

    The weapons attachment system is finally here in version 1.0.0. As promised last week, we will be giving a whole set of explanations on what it covers, how it works, and the changes that we'll be making with the Bullet Launchers attachment system that we'll integrate into the wea

  8. Developer post

    WIP: 1.0.0 Weapon Attachment System Showcase

    Hello everyone! We're back this week with a showcase full of the up-and-coming weapons attachment system. It's a system that's similar to the launcher's attachment we've had before, but they work on your weapons instead. While we only have images to share today, we will provide m

  9. Developer post

    WIP: 1.0.0 New Mission Sneak Peak

    As promised! Here is a WIP update for the upcoming 1.0.0 update featuring one of the new missions that will be available in the update! This mission will feature an area filled with the highest concentration of Void particles, where Quarks will swarm out from every where without

  10. Developer post

    Incoming Patch Status Update

    tl;dr Update will be coming in September Hello everyone. First off, let us apologize for not having frequent updates like before and making the project feels like it's dead. We've been busy working on the various systems to make the next update as best as it can be. With that sai

  11. Developer post

    0.13.0 Progress update

    Hello everyone! Sorry for not having any new WIP update for these past months. We are still currently working on giving 0.13.0 its deserved quality thus we don't have any news regarding its release date or time yet. We wanted to post this as a way to say we're still working on it

  12. Developer post

    WIP: 0.13.0 New Boss Preview

    Welcome back to another WIP update for 0.13.0! As we've updated the game with our sharing system a few weeks ago, we've now resumed our work to the story content part as we've promised before! Today's WIP update will be a short one though, as we wanted to show you a really early

  13. Developer post

    Patch 0.12.0 Released!

    Update 0.12.0 alongside the Mecha Asset Sharing System has been released! For patch notes, refer to this link: We're also sharing most of our builds, the Valkyries, the Odin, the Cyclops, and many more made by our developers in the discord channel so come pick them up if you'd li

  14. Developer post

    Upcoming Updates and Patch Notes

    After months of working on the M.A.S.S. we're finally ready to announce the update release timing, which honestly isn't far at all. In fact, we'll be releasing the update on this coming Saturday November 30th (GMT +7). As we've mentioned in an old news post, we wanted to release

  15. Developer post

    WIP: Update TImeline

    Welcome back to another WIP update for 0.12.0. This week, we're talking about the timeline of 0.12.0. Let us just get it straight out, 0.12.0 featuring the M.A.S.S. will be released at the end of November. Patch notes incoming soon. What about the big guy on the banner? Well, tha

  16. Developer post

    WIP: 0.12.0 Mecha Asset Sharing System Preview

    Welcome back to another WIP update for 0.12.0. We're going all out in showing you the M.A.S.S. or the Mecha Asset Sharing System this week! Hopefully, it will be able to provide you with the satisfaction as it did to us when we were discussing and creating the system. Let's get i

  17. Developer post

    WIP: 0.12.0 Assets Sharing Sneak Peek

    Welcome back to another WIP post for M.A.S.S. Builder, featuring the Assets Sharing System (M.A.S.S.) once again! It's just a small sneak peek to how we've designed the systems and what it could eventually do! For now, it's just about the "export" part of the system, where you ca

  18. Developer post

    M.A.S.S. Builder: Impressions from Tokyo Game Show 2024

    Welcome back to another WIP for M.A.S.S. Builder! This week we'll talk about the Tokyo Game Show 2024 event that we've attended last week! First of all, thank you to everyone who visited our booth during the event! It's great to see the faces of people still following the develop

  19. Developer post

    M.A.S.S. Builder is heading to Tokyo Game Show 2024 and WIP update!

    There are two things we'll talk about today! The first is what was listed in the headlines, M.A.S.S. Builder will be heading to Tokyo Game Show on September 26 - 29 at the indie games area! Our booth will be represented by Sekai Project, our publisher, and we'll have both English

  20. Developer post

    WIP: 0.12.0 Sharing System update

    Welcome back to a new WIP update for M.A.S.S. Builder, this week featuring our still-in-design M.A.S.S. feature! As the phrasing suggested, we are still designing the feature but have explored a lot of options on how it will work which we shall share with you today. First and for