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Steam News8 December 20256mo ago

v1.1.7 - The Builder's Update

When Launching The Desktop, A "Desktop" Folder Will Be Created In The Current User's Home Folder. Replaced The Desktop Prototype Warning's "MabelOS" Typo With "MabelDOS".

In this update2

Full notes

Full MabelDOS update

Read the full published notes in a cleaner layout. The original post stays linked below.

What changed

1 fix3 additions3 changes0 removals
  • UI and audio
  • Gameplay
  • Fixes
  • Compatibility
changedReplaced The Desktop Prototype Warning's "MabelOS" Typo With "MabelDOS".
addedAdded MabelVM Assembler, To Allow For Programs To Be Assembled Into ByteCode From A Custom Assembly Language.
addedAdded "Assemble" Command For The Assembler CLI.
fixedFixed MabelVM Not Launching Any Worker Threads On A Single Threaded System.
changedPrograms That Do Not Start With The Ascii Bytes "MD" Or Requires A Minimum "Kernel" Version Newer Than That Of The Game, Will Fail To Load To Prevent Compatibility Issues.
changedImproved Terminal Text Writing Support.

MabelDOS changes

changedReplaced The Desktop Prototype Warning's "MabelOS" Typo With "MabelDOS".
addedAdded MabelVM Assembler, To Allow For Programs To Be Assembled Into ByteCode From A Custom Assembly Language.
addedAdded "Assemble" Command For The Assembler CLI.
fixedFixed MabelVM Not Launching Any Worker Threads On A Single Threaded System.
changedPrograms That Do Not Start With The Ascii Bytes "MD" Or Requires A Minimum "Kernel" Version Newer Than That Of The Game, Will Fail To Load To Prevent Compatibility Issues.

  • When Launching The Desktop, A "Desktop" Folder Will Be Created In The Current User's Home Folder.

  • Replaced The Desktop Prototype Warning's "MabelOS" Typo With "MabelDOS".

  • The Caps Lock Key Now Toggles The Shifted State Of The Keys, Acting Like A Shift Key.

  • Started Work On A Custom ByteCode VM For The MabelDOS Desktop Prototype.

  • Added MabelVM Assembler, To Allow For Programs To Be Assembled Into ByteCode From A Custom Assembly Language.

  • Added "Assemble" Command For The Assembler CLI.

  • Fixed MabelVM Not Launching Any Worker Threads On A Single Threaded System.

  • Programs That Do Not Start With The Ascii Bytes "MD" Or Requires A Minimum "Kernel" Version Newer Than That Of The Game, Will Fail To Load To Prevent Compatibility Issues.

  • Replaced All References To "Virtual Disk" With More Concise "vDisk" Naming.

  • Improved Terminal Text Writing Support.

  • Added "MabelVM-ISA.asm" Instruction Set Architecture Reference Sheet File To The Static Assets.

Please Note:

The Bytecode VM Doesn't Stop You From Executing Programs / Assembly Source Downloaded Using The "Download" Or "Pack" Commands, And May Execute Malicious Programs.

This Risk Is Currently Not Dangerous As MabelVM Programs Have No Way Of Modifying Or Reading The Save vDisk, Or Any Other Malicious Actions.

Source

Steam News / 8 December 2025

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