While Gears of War: Judgment topped the chart, Gears of War 3 sold more than four times as many copies back in its opening week in September 2011.
Activision's The Walking Dead: Survival Instinct, a first-person shooter based on the AMC TV show that is just about to conclude its third season, debuts in third place.
Monster Hunter 3 Ultimate, which was released last week on the 3DS and Wii U, lands in seventh place, behind FIFA 13, Sniper: Ghost Warrior 2, and God of War: Ascension.
Fifty-five per cent of Monster Hunter 3 Ultimate's sales were on the 3DS, with 45 per cent going to the Wii U.
Rounding out the top 10 is SimCity in eighth, Far Cry 3 in ninth, and Call of Duty: Black Ops II in 10th.
Other chart movement sees Starcraft II: Heart of the Swarm drop 20 places to 23rd, and Aliens: Colonial Marines creep up from 21st to 16th. Nintendo Land also enters the UK chart for the first time in 2013 at 39th.
The Top 20 UK chart for the week ending March 23:
1. Gears of War: Judgment
2. Tomb Raider
3. The Walking Dead: Survival Instinct
4. FIFA 13
5. Sniper: Ghost Warrior 2
6. God of War: Ascension
7. Monster Hunter 3 Ultimate
9. Far Cry 3
10. Call of Duty: Black Ops II
11. Metal Gear Rising: Revengeance
12. Crysis 3
13. Assassin's Creed III
14. Skylanders Giants
15. Need for Speed: Most Wanted
16. Aliens: Colonial Marines
17. The Elder Scrolls V: Skyrim
18. Sonic & All-Stars Racing Transformed
19. Hitman Absolution
20. LEGO Batman 2: DC Super Heroes