I've been following this community [0] which has unofficially relaunched a Korean online game which originally only lasted from 2003 to 2007 [1] and I played when I was a kid. It's amazing to be able to login into the same UI/UX and play the same game almost 15 years later.

[0] https://www.spgenerations.com/ [1] https://en.wikipedia.org/wiki/Survival_Project