Call of Duty: World at War Zombies seems to be making a comeback, likely powered by the release of it's free "lite" version last week.
The newcomers to the list are Spore Creatures, which I've just started playing myself, and X Games SnoCross, which seems to offer some pretty spectacular graphics.
Here's the full list:

Which do you think should be the top game?
Check out all of our iPhone game reviews.
PositionTitlePriceWeeksLast Week1Rock Band (EA)$6.99212Grand Theft Auto: Chinatown Wars (Rockstar Games)$9.99213Call of Duty: World at War Zombies (Activision)$9.99534Bejeweled 2 (PopCap Games)$2.992245Doodle Jump (Lima Sky)$.99367Spore Creatures (EA)$6.991-8The Sims 3 (EA)$6.992159Tetris (EA)$4.992178The Game of Life (EA)$2.99369Madden NFL 10 (EA)$6.993410X Games SnoCross (ESPN)$4.991-

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