@gamingonlinux My all time favourite game S4 League (released in 2007) had its last official server shut down in 2021.

In my case, I got lucky. There's an (incomplete, but with most popular game modes working) publicly available reverse-engineered server and a small handful of private servers. I can still play my favourite game to this day.

But the sad reality is that many games don't end up attracting the type of people who can reverse engineer this. And they're lost forever. I weep for them.