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Steam

Dum-Dum

Also known as Dum-Dum, dd, dum dum

Travel back to 1985 to discover more about the self-proclaimed “greatest operating system of all time." Navigate the weird quirks of Hogo OS 1985 Edition, solve puzzles, play mini-games, and unravel the story behind why this one-time cutting edge computer system was mysteriously lost to time.

Last update
31 May 2026
Players now
0
Original sources
1
Latest update
Announcement

Intro arrow + hogo bbs addition

Added a help arrow for new players starting the game, directing them to the ReadMe file on the desktop. Added a hogo/bbs knock knock joke generator.

2 changesGameplay
Latest updates

Update history

Browse past updates and patch notes for this game.

20updates

Gallery

In-game media

Achievements

Community progression

Top picks from 65 Steam achievements, sorted by player unlock rates.

  • Clue DetectiveRead to the end of the Update Log93.8%
  • The Definition Of InsanityGive the same answer in Dum-Dum 5 times in a row82.8%
  • Why, Indeed?Change the system font79.1%
  • Off-ColorCustomize the background color78.5%
  • Making Your PointChange the mouse cursor75.0%
  • Beanie Hat HackerHack your computer73.8%