- Defictionalisation: Not quite for the operating systems themselves, but boxes for all of them have been created as seen here (as of September 2020).
- Dummied Out: There are several pieces of unused content hidden in the game's files, which include startup sounds and magenta segments.
- Schedule Slip: The November 2020 update was actually released in December of that same year.
List of operating systems
Links go to Wikipedia for further reading and comparison purposes.
Progressbar OS line:
- PB-DOS Shell
- Progressbar 1
- Progressbar 2
- Progressbar 3.14
- Progressbar NOT 3.60
- Progressbar Chitown
- Progressbar 95
- Progressbar 95 plus
- Progressbar NOT 4.0
- Progressbar 98
- Progressbar Meme
- Progressbar 2000
- Progressbar Whisper
- Progressbar XB
- Progressbar Largehorn
- Progressbar Wista
- Progressbar 7
- Progressbar 81
- Progressbar 10
- Progressbar 1X
- Progressbar 11