1. Fallen Legions from www.instantaction.com
-mech suit battle, has flying, kill people. F'n awesome graphics. F'n awesome game. They have other multiplayer games that you should take a look at but this ones my fav.
2. Zomg from www.gaiaonline.com
-standard type mmo but well done. Good graphics. Lots of character customization on the gaia website.
3. Runescape from www.runescape.com
-OLD GAME but still entertaining. Standard mmo. P2P for extra stuff, which sucks.
5. Habbo Hotel from www.habbohotel.com
-place where to go to just chat but eventually jerk off , perverted website for perverted people.
This game is really f'n old. As old as runescape. (don't use it any more though, been like 4-5 years since i have).