It is followed by Need For Speed: Hot Pursuit and Call Of Duty: Black Ops in second and third.
Elsewhere FIFA 11 moves down one place to fourth and Fallout: New Vegas swaps places with Undead Nightmare in seventh and eighth.
The top ten in full:
1. (1) Gran Turismo 5 (Sony)
2. (4) Need For Speed: Hot Pursuit (Electronic Arts)
3. (2) Call Of Duty: Black Ops (Activision)
4. (3) FIFA 11 (Electronic Arts)
5. (5) Assassin's Creed: Brotherhood (Ubisoft)
6. (6) Medal Of Honour (Electronic Arts)
7. (8) Fallout: New Vegas (Bethesda Softworks)
8. (7) Red Dead Redemption: Undead Nightmare (Rockstar Games)
9. (9) The Sims 3 (Electronic Arts)
10. (10) Sports Champions (Sony)
Leisure software charts compiled by Chart Track, (C) 2011 UKIE Ltd.