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Difference between revisions of "M.A.S.S. Builder"

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Revision as of 11:24, 9 December 2022

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This product is unreleased but remains under active development - information may change frequently and could be outdated or irrelevant.
This page is a stub: it lacks content and/or basic article components. You can help to expand this page by adding an image or additional information.
M.A.S.S. Builder
M.A.S.S. Builder cover
Vermillion Digital
Sekai Project
Unreal Engine 4[Note 1]
Release dates
Windows Early access
Microtransactions None
Modes Singleplayer
Pacing Real-time
Perspectives Third-person
Controls Direct control
Genres Action, Hack and slash, Shooter, TPS

General information

Publisher Discord server
Kickstarter page
M.A.S.S. Builder Feedback Hub
Community wiki
Steam Community Discussions


Source DRM Notes Keys OS
Green Man Gaming
Icon overlay.png
Icon overlay.png
A demo is available from Steam.

Game data

Configuration file(s) location

System Location
Windows %LOCALAPPDATA%\MASS_Builder\Saved\Config\WindowsNoEditor
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/956680/pfx/[Note 2]

Save game data location

System Location
Windows %LOCALAPPDATA%\MASS_Builder\Saved\SaveGames
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/956680/pfx/[Note 2]

Photo mode screenshots location

System Location
Windows %LOCALAPPDATA%\Saved\Screenshots\WindowsNoEditor

Save game cloud syncing

System Native Notes
Steam Cloud


Video settings
Video settings

The game engine may allow for manual configuration of the game via its variables. See the Unreal Engine 4 page for more details.


Input settings
Input settings
Camera settings
Camera settings

Keyboard and mouse State Notes
Mouse acceleration
Negative mouse acceleration.
Mouse sensitivity
Mouse input in menus
Mouse Y-axis inversion
X-axis inversion also supported.
Controller support
Full controller support
Some input fields require a keyboard.
Controller remapping
Controller sensitivity
Controller Y-axis inversion
X-axis inversion also supported.
Controller types
XInput-compatible controllers
Xbox button prompts
Shoulder buttons use PlayStation-style prompts.
Impulse Trigger vibration
DualShock 4 controllers
Generic/other controllers
See the glossary page for potential workarounds.
Additional information
Controller hotplugging
Haptic feedback
Simultaneous controller+KB/M
Prompts will switch based on the last input received by the game.


Audio settings
Audio settings

Audio feature State Notes
Separate volume controls
Background music, sound effects, and UI sounds.
Surround sound
The game doesn't seem to output to the centre channel on 7.1 setups.
The game has no spoken dialogue.
Closed captions
Mute on focus lost
Royalty free audio


Language UI Audio Sub Notes
No speech; all dialogue is displayed as text. No closed captions.
Simplified Chinese
Traditional Chinese

Issues unresolved

Lock-on issues at vertical resolutions higher than 1080p

At such resolutions, the lock-on marker will prefer targets towards the right side of the screen when not locked on, and will flicker when locked on. Setting the resolution to one that is 1080 pixels high or less will result in the lock-on marker behaving normally again.[3]

Other information


Technical specs Supported Notes
Direct3D 11
Executable 32-bit 64-bit Notes

System requirements

Operating system (OS) 7, 8.1, 10
Processor (CPU) Intel Core i5
AMD Phenom II X3
System memory (RAM) 8 GB
Hard disk drive (HDD) 3 GB
Video card (GPU) Nvidia GeForce GTX 1050
AMD Radeon RX 560
Sound (audio device) DirectSound compatible
A 64-bit operating system is required.


  1. Unreal Engine 4 engine build:[1]
  2. 2.0 2.1 File/folder structure within this directory reflects the path(s) listed for Windows and/or Steam game data (use Wine regedit to access Windows registry paths). Games with Steam Cloud support may store data in ~/.steam/steam/userdata/<user-id>/956680/ in addition to or instead of this directory. The app ID (956680) may differ in some cases. Treat backslashes as forward slashes. See the glossary page for details.


  1. Verified by User:Williamjcm on 2021-06-28
  2. M.A.S.S. Builder AA conversation Discord snippet - last accessed on 2020-06-22
    "We use post process effect Temporal AA [...] Low is always on, with very very low sampling rate"
  3. M.A.S.S. Builder Feedback Hub - (Bug) Issues with the lock-on system at vertical resolutions above 1080p - last accessed on 2020-08-17