What's your favorite memory from the early internet?

It's not that early, but eyezmaze.com (which apparently still exists) was one of those sites I found one day and regularly played on for years.

If you want to get a feeling of the old internet, look here: https://search.marginalia.nu/explore/random

To be clear, those are not (only) old sites, but a lot of them feel like the old web.