http://www.gamasutra.com/php-bin/news_index.php?story=22196
Gamasutra's weekly column, "Saling The World", covers the top five real-time Amazon.com sellers for every available platform in the United States, Japan, and Europe, providing an important update of sales patterns worldwide.
This results in a true sense of what games are selling worldwide on the real-time updated service 
Nintendo Wii
North America: 1. Samba de Amigo (Sega), 2. Wii Fit (Nintendo), 3. Mario Kart Wii (Nintendo), 4. My Fitness Coach (Ubisoft), 5. Active Life: Outdoor Challenge (Namco Bandai).
Japan: 1. Taiko no Tatsujin Wii (Namco), 2. Another Code:R - Kioku no Tobira (Nintendo), 3. Wii Fit (Nintendo), 4. Mario Kart Wii (Nintendo), 5. Wii de Asobu: Mario Tennis GC (Nintendo).
UK: 1. My Fitness Coach (Ubisoft), 2. Mario Kart Wii (Nintendo), 3. Wii Fit (Nintendo), 4. Wii Play (Nintendo), 5. Mario & Sonic at the Olympic Games (Sega).
Sega's Samba de Amigo takes a surprise sales victory on the Nintendo Wii this week, thanks to a recent Amazon "Deal of the Day" promotion that dropped the title's price to $9.99. Wii Fit and Mario Kart Wii continue to see strong sales, while the physical fitness titles My Fitness Coach and Active Life: Outdoor Challenge close out the regional top five.
In Japan, Nintendo's Trace Memory sequel Another Code:R - Kioku no Tobira premieres this week at second place, as Taiko no Tatsujin remains in the region's top spot. Wii Fit and Mario Kart Wii follow at third and fourth place, while Wii de Asobu: Mario Tennis GC finishes fifth.
Xbox 360
North America: 1. Halo 3 (Microsoft), 2. Call of Duty: World at War (Activision), 3. Gears of War 2 (Microsoft), 4. Left 4 Dead (EA Games), 5. Fallout 3 (Bethesda).
Japan: 1. Left 4 Dead (EA Games), 2. Midnight Club: Los Angeles (Spike), 3. Ninja Blade (From Software), 4. Fallout 3 (Bethesda), 5. Call of Duty 4: Modern Warfare (Activision).
UK: 1. Left 4 Dead (EA Games), 2. Gears of War 2 (Microsoft), 3. FIFA 09 (EA Sports), 4. Call of Duty: World at War (Activision), 5. Call of Duty 4: Modern Warfare -- Game of the Year Edition (Activision).
Anticipation for the upcoming release of Halo Wars boosts sales for Halo 3, which finishes as North America's top Xbox 360 title for the week. Call of Duty: World at War and Gears of War 2 finish at second and third place, followed by Left 4 Dead and Fallout 3.
Left 4 Dead also sees a strong sales week in Japan, where it finishes first in overall sales numbers. Midnight Club: Los Angeles finishes up its first week of release at second place, while last week's sales leader Ninja Blade takes third.
PlayStation 3
North America: 1. LittleBigPlanet (SCEA), 2. Call of Duty: World at War (Activision), 3. Metal Gear Solid 4: Guns of the Patriots (Konami), 4. Grand Theft Auto IV (Rockstar), 5. Burnout Paradise (EA Games).
Japan: 1. Demon's Souls (SCEI), 2. Fallout 3 (Bethesda), 3. Ryu ga Gotoku Kenzan! -- PlayStation 3 The Best (Sega), 4. Midnight Club: Los Angeles (Spike), 5. Tomb Raider: Underworld (Eidos).
UK: 1. LittleBigPlanet (SCEE), 2. Call of Duty 4: Modern Warfare -- Game of the Year Edition (Activision), 3. Uncharted: Drake's Fortune -- Platinum Edition (SCEE), 4. Mirror's Edge (EA Games), 5. Assassin's Creed -- Platinum Edition (Ubisoft).
LittleBigPlanet takes a weekly sales lead over last week's PS3 chart champion Call of Duty: World at War in North America, as Metal Gear Solid 4 moves up to finish third. Grand Theft Auto IV returns to the platform's top five at fourth place, meanwhile, as Burnout Paradise once again finishes at fifth.
The From Software-developed action-adventure title Demon's Souls tops Japanese PS3 software sales in its first week of release, and pushes last week's top seller Fallout 3 to second place. Fellow newcomer Midnight Club: Los Angeles also makes an impressive showing this week, though Tomb Raider: Underworld may soon be on its way out of the regional top five.
