Gamers. What was the game that got you into the hobby?

In early 2000s, I got hooked into an online MMORPG called Tibia with some friends. At it's peak it had something like 70k players online. It was cutthroat, if you died you'd lose hours and hours of progress. I was hooked at one point doing 14h days. That experience has been impossible to recreate in adulthood.