Announcement
#18Patch 18 MAR 2025
French localization is now available, thanks to Sykoo! A huge thank you!
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ABI-DOS
Also known as ABI-DOS, abi dos, abi-dos
Build the most advanced operating system ever created! Can you master the fictional simulation language of this mind-bending machine? Design circuits, automate UBITS (coloured mobile data blocks), and optimize your system. The Admin is always watching, and he’s not what he seems.
Last update
21 Jun 2026
Players now
5
Latest update
Update history
Browse past updates and patch notes for this game.
18 updates
February 2025
- Patch 3 FEB 2025Fixed a bug that caused text to be misaligned when opening the options menu.
January 2025
- Korean Translation (Patch 30 JAN 2025)The game has now a Korean translation available. - Thanks to JW (intothereign)
- Small Patch 26 JAN 2025Descriptions from Linked List and MEM4 Emulator have been slightly modified for improved clarity.
- PATH 14 JAN 2025I updated the execution order grid displayed on the second page of "Pairer" for accuracy.
- Patch 9 JAN 2025While a histogram is downloading, an ellipsis will appear in the top-left corner of the histograms screen. Once the download is complete, the screen will display the number of scores downloaded. If this number is less t…
- Patch 8 JAN 2025I clarified how OE functions in the Pairer level with an example page. - I added explanatory text to the Signal Counter level. - I updated the quick reference guide to include utilities that mirror the information avail…
- Leaderboards FIXAs the number of players in the game increased, I noticed some issues with the histograms. Initially, the histograms started growing as expected, but over time, they began to look incorrect. Some lower percentiles appea…
- ABI-DOS is now FREE foreverAs promised in December, the game is now completely free for everyone to enjoy—forever! This decision comes after modest sales during the first month and a half after release. While the game was still profitable, financ…
December 2024
- Hotfix 29 DEC 2024Solved a minor bug affecting number input on icons.
- ABI-DOS will be Free on Steam: A Heartfelt Thank You to Our SupportersI’m excited to announce that starting January 2025, ABI-DOS will be available for free on Steam. This decision is not a reflection of the game’s quality—which I wholeheartedly believe is excellent—or its reception, whic…
November 2024
- Patch 24 NOV 2024Added a quick access button for the online manual in the options menu (accessible by pressing ESC). The offline version is in the installation folder. The Sandbox is available after completing 8 levels.
Gallery
In-game media
Achievements
Community progression
Top picks from 20 Steam achievements, sorted by player unlock rates.
- 4 SEGMENTS4 valid segments58.1%
- 8 SEGMENTS8 valid segments33.1%
- 12 SEGMENTS12 valid segments18.7%
- 16 SEGMENTS16 valid segments11.9%
- 20 SEGMENTS20 valid segments8.1%
- 24 SEGMENTS24 valid segments5.8%