We've got 'em, leaked Halo 3 alpha screen grabs

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During this one-of-a-kind reality competition, each gamer will compete to advance through the tournament by using home court advantage - the right to play on their own turf, flanked by family and friends. Once on their own home turf, the elimination games begin. After these 2nd rounds, the winners face an even bigger challenge. Each second-round winner must take on the role of NBA LIVE coach to an actual NBA player. Their athletes' success or failure against another athlete determines home court advantage for the semi-final rounds. When it's down to two players, they will compete on the ultimate home court - that of the 2006 NBA Champion Miami Heat, the American Airlines Arena in Miami. The winner will take home $100,000."
Xbox 360 Top Live Titles (UU’s)
1 Gears of War
2 Tom Clancy's Rainbow Six Vegas
3 Crackdown (Demo)
4 GRAW 2 (Demo)
5 Call Of Duty 3
6 Madden NFL 07
7 Lost Planet
8 NBA STREET (Demo)
9 Oblivion
10 GRAW
Top Arcade Titles (Full Versions)
1 Root Beer Tapper
2 UNO
3 Heavy Weapon
4 Ultimate Mortal Kombat 3
5 LUMINES LIVE!
6 Street Fighter II' Hyper Fighting
7 Contra
8 Texas Hold 'em
9 Assault Heroes
10 Geometry Wars Evolved
Original Xbox Top Live Games
1 Halo 2
2 Battlefield 2: MC
3 Madden NFL 07
4 Call of Duty 3
5 Counter-Strike
6 Forza Motorsport
7 Star Wars: Battlfrnt 2
8 Ghost Recon 2
9 Rainbow Six 3 BA
10 PGR 2
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