The “European hacker-culture demo” from Ezra’s Amiga is likely State Of The Art or 9 Fingers from Spaceballs — both really cool scene demos:
These easily run on an Amiga 500 ES from the 80s, and are stored on a single floppy disk.
These easily run on an Amiga 500 ES from the 80s, and are stored on a single floppy disk.