It's no surprise that as games come out, they'll end up with a decent position on the list, but Worms taking the top spot in the arcade section is a good accomplishment. Everyone seems to love those little killers. 

Xbox 360:

• Gears of War
• Crackdown
• Tom Clancy's Rainbow Six Vegas
• Call of Duty 3
• Alien Hominid HD

Live Arcade:

• Worms
• Alien Hominid HD
• UNO
• Paperboy
• Lumines Live

Unfortunatly not even Crackdown it seems can't top the mighty Gears of War. With that said it'll probably hold the number one spot until something like Halo 3 comes out.

[Source: Major Nelson]