Sudoku iPhone
"Simpler to use, and includes over 10,000 puzzles"
Best Sudoku apps for iPhone - Macworld.com
Tranquility
Tranquility offers relaxing, professionally-recorded environmental sounds designed to ease stress and help the user sleep.
Wingnuts Moto Chaser
"It’s exactly what an iPhone game should be; quick, fun, and great for showing off."
AppleTell.com