Gaming's two mightiest icons, Mario and Sonic, have been knocked from the top of the Charts this week by another title in which two is the magic number – Electronic Arts' Army of Two.

EA's shooter equivalent to the buddy movie, released on the PS3 and Xbox 360, becomes the first Number 1 of the year to be based on new intellectual property, consigning SEGA's Mario & Sonic at the Olympic Games to Number 2 with a 34% drop off in sales from last week.

Following a bumper week thanks to hardware bundling, Nintendo’s Brain Training is knocked down a peg to Number 3. The grey matter improvement title is also Nintendo’s only Top 10 game this week.

Rockstar mischievously makes its way into the Top 10 at Number 4 with the release of Bully: Scholarship Edition – the 360 and Wii version of last year's Canis Canem Edit. Midway's Game Party for the Wii is the only title in the Top 10 to have seen a sales increase this week, with the jump seeing it up to Number 7 from Number 13.

While EA's chummy shooter may have made a splash this week, but its 'urban' soccer-ball outing, FIFA Street 3, falls out of the Top 10, sliding all the way from Number 8 to Number 17. It occupies the former spot of its stablemate, FIFA 08, which last week sat at Number 17 but has climbed three places to Number 14.

Replacing FIFA Street 3 at Number 8 is a new release from THQ, its PC expansion pack, Warhammer 40,000: Dawn of War – Soulstorm.

There are two other new entries in the Top 40 this week, another from THQ - MX vs ATV Untamed, at Number 18, along with Koei's Dynasty Warriors 6 just behind it at Number 19.

Next week, keep an eye out for Codemasters' Turning Point: Fall of Liberty for the PS3, 360 and PC and Rising Star's No More Heroes for the Wii.

You can see the Top 10 below (last week's position is in brackets).

(NE) 1. Army of Two - EA Games
(1) 2. Mario & Sonic at the Olympic Games - SEGA
(2) 3. Dr. Kawashima's Brain Training - Nintendo
(NE) 4. Bully: Scholarship Edition - Rockstar
(5) 5. Call of Duty 4 - Activision
(4) 6. Frontlines: Fuel of War - THQ
(13) 7. Game Party - Midway
(NE) 8. Warhammer 40,000: Dawn of War – Soulstorm - THQ
(9) 9. Pro Evolution Soccer 2008 - Konami
(3) 10. Lost - Ubisoft

You can see the full All Format Chart (and many others) right over here.