1) Everquest - hands down the greatest of all time (still playing after 18+ years!)
This was the hardcore game, I use to book holidays off work to raid SSRA for a week.
2) Everquest 2 - amazing just amazing, sadly now runs crap on a decent set up.
3) WOW - yes I said WOW, on release this game was amazing, remember the old battles at the Crossroads?
4) Warhammer Dawn Of War - all of them especially 3 - love GW stuff
5) Wolfenburg - the original text based MUD from the late 90s, met so many friends who all transferred to EQ on release.
6) SWTOR - yes its going down hill, yes I may be off if the threatened changes happen but just cant bring myself to unsub just yet.
7) ESO - even though they lied (you cant play as you wont if you need to do end game stuff) love the look and feel of the game and the endless way you can change your toon (if you have the cash)
8) Empyrion - build it, fly it, kill stuff
9) GW2, loved the old zones hate the new stuff, but still good memories
10) Red Storm Rising - back when we used tape cassettes, now redone as Cold Waters (I love you Killerfish Games!)
Be safe