Guild Wars 1 (not Guild Wars 2, Guild Wars 2 is Rift 2, has nothing to see with Gw1) Guild Wars 1 was the best MMO game ever made, unique in everything: game play, questing, pvp, pve, ranking system, servers system, comunity, etc, a game like that apears once every 20 years. i would vote the poll, but i cant
Of all those games I've tried WoW and Everest. Everest was sooo boring, plus it lagged pretty bad for me back in the day. I was playing WoW on a private server, so it got a little boring and lonely being one of 60 people on the server. Now WoW is free to lvl 25, which might entice me back.
I like Hitman, Project IGI, Counter Strike, Dota, NFS and Virtual Tennis really great games. They are nice for children and adults alike.
For me, the only game is Starcraft (I&II). I've been playing it since 486 and i still like to play Starcraft I even it was released in 1998, 15 years ago!