What are the top 50 games online

I'm not sure about all 50 but a recent poll states that Halo 1 (combat evolved) is by far the most popular. you have to buy it though, sorry. However you can get the custom edition from this site:
http://download.cnet.com/Halo-Combat-Evolved-Custom-Edition/3000-7441_4-10292205.html?tag=mncol;pop
Sorry but i cant give out my CD key.