Here are some great multi-player gaming sites you can actually play online with your friends.

Battle Dawn

Battle Dawn is a free multiplayer online game featuring three types of worlds with thousands of other real players. The game is built entirely in flash. it’s a free mmorpg game that requires no downloads. http://www.battledawn.com/ battledawn great multiplayer online game  

AGame

http://www.agame.com/games/multiplayer AGame is Your zone to play free online games.

Mini Clip Fun Factory

You can play the games below and more at Mini Clip fun factory. http://www.miniclip.com/games/genre-2/multiplayer/en/ Play EmpireEmpire Play Robot RageRobot Rage Play Rise MythosRise Mythos Play Big FarmBig Farm Play OurWorldOurWorld Play Tanki OnlineTanki Online Play Bullfrog PokerBullfrog Poker Play Wizard101Wizard101 Play WartuneWartune Play 8 Ball Pool8 Ball Pool Play Club PenguinClub Penguin Play DrakensangDrakensang