It's called Ragnarok Online, and it's kinda like WoW, but a bit more complex. You actually "build" your character, based on 6 ability traits, and you pick which skills you want to try and develop.
Unlike WoW, the main focus of play isn't to do quests, but to simply explore and have fun! A lot of people build their characters to do what's called PvP, Player vs. Player, or team "wars" known as War of Emperium. I, however, focus on money making and building characters to solo against big monsters with.
There are a ton of job classes to choose from, and each one has it's own requirements for for abilities and items to be successful. I started playing about 3 years ago, when I had a girlfriend who was way into the game. I quit for a while, but lately, I've found it fun again and have been playing here and there.
There are many servers, and you actually have to download each one separately if you want to play across multiple servers. I have my account with the EuphRO server, though, and you can find that here:
www.euphrogame.com
It's about 2 gigs of download, and then it's a 2-part compressed file. So, if your computer isn't the fastest, it may take a while to download, and then a while more for it to un-compress the install file.
But anyway! Anyone ever play this silly little game?