I play on the game site Pogo.com
http://www.pogo.com
It has a multitude of games to play, and you don't have to be a paying member to play the games, although you can't access members areas and not sure what the other restrictions are to all of that. If you do want to become a member but/or just want to see what it's like, I have free 5 day passes (I have 4 that I can give out) that will give you a taste of what being a member is like. If you want to check it out, I'll be happy to give it to you, just PM me!