http://www.free-games-net.com
Some old favourites - if you dig down a bit
Intriguing SMS site...
http://www.eatmyphone.com
Send photos via SMS
Nokia Games
http://www.nokiagame.com
Finns attempt to take over your life...
Online trivia quizzes - every two minutes
http://www.uproar.co.uk/games/go.asp?game=tffa
Soda Play
http://www.sodaplay.com/constructor/index.htm
Build your own models - but keep it hidden
Useless Knowledge
http://www.uselessknowledge.com
Trivia site