What good online PC games are there?

[dreamwaves]

I want to play some online PC games but I have a problem with choosing…Well I need some online action games to play...So what is the best games for that...?

[TheWannabeMusician]

Action games is a pretty broad discription... I'd recommend Diablo 2, but that's hack 'n slash really. You could try CoD, but I don't know if that's what you're looking for. And otherwise you could always settle for WoW

[FadedHearts]

There are plenty of online PC games out but my all time favorite is WarCraft. It’s so addictive.

[blank]

I just recently got into Magicka. It's pretty fun by itself but the online CoOp and PvP is addicting.