May 2009 NPD sales data

Wii 289.5K
Nintendo DS 633.5K
PlayStation 2 117K
PlayStation 3 131K
PSP 100.4K
Xbox 360 175K

UFC 2009 UNDISPUTED THQ Xbox 360 679.6K
Wii FIT W/ BALANCE BOARD NINTENDO OF AMERICA Wii 352.8K
EA SPORTS ACTIVE BUNDLE ELECTRONIC ARTS Wii 345.8K
UFC 2009 UNDISPUTED THQ PS3 334.4K
INFAMOUS SONY PS3 175.9K
POKEMON PLATINUM VERSION NINTENDO OF AMERICA NDS 168.9K
MARIO KART W/ WHEEL NINTENDO OF AMERICA Wii 158.3K
PUNCH OUT!! NINTENDO OF AMERICA Wii 156.9K
X-MEN ORIGINS: WOLVERINE UNCAGED ED ACTIVISION BLIZZARD Xbox 360 120.7K
Wii PLAY W/ REMOTE NINTENDO OF AMERICA Wii 109.8K