Over the past 30 days, this site has had a lot of traffic because of the following games.  What's your favorite game?
1. 
Escape From Rhetundo Island2. 
Smart Stick Adventure 2 1/23. 
Hapland 34. 
Parking Perfection 25. 
Super Mario Bros6. 
Orbox B7. 
Jungle Gin8. 
Wogger9. 
Chronon10. 
Online AdventuresHapland 3 and its mate, Escape from Rhetundo Island, caused quite a stir when they were released, and I received quite a bit of traffic after posting walkthroughs.  The same goes for Chronon, so I owe a thank you to foon and eyezmaze for creating those great games .  Smart Stick Adv 2 1/2 (I believe) receives a lot of traffic as an indirect result.  Wogger has a full walkthrough posted as well, and so, again,  I'm not surprised to see it near the top despite being so new (I also have a link to the walkthrough at digg, so that helps).
Parking Perfection 2 was quite a surprise to me.  It was one of the first games I got a lot of hits for reviewing, and I almost didn't do it.  It just wasn't one of my favorites, but I got addicted to it despite my frustration.  So...
Super Mario Bros is a classic and I've posted many tips for those who get frustrated at Orbox, so I suppose it's no surprise to see them in the top 10.
Online Adventures is my summary for puzzle pirates and Runescape.  Both are great games and both receive a lot of attention (Runescape in particular) in the online world.