Here's my brother's list:
1. Red Dead Redemption
2. Pokemon Red/Blue
3. Super Mario Galaxy 2
4. Mario Kart 64
5. Super Smash Bros.
6. Call of Duty 2
7. Super Mario 64
8. The Legend of Zelda: Ocarina of Time
9. Call of Duty 4: Modern Warfare
10. Halo 3
11. Super Smash Bros. Melee
12. Heroes of Might & Magic III
13. WarCraft III: Reign of Chaos
14. StarFox 64
15. Mortal Kombat II
16. Super Mario 3D World
17. Okami
18. Super Mario Sunshine
19. Paper Mario: The Thousand Year Door
20. TimeSplitters: Future Perfect
21. Batman: Arkham City
22. GoldenEye 007
23. Mario Party
24. Fire Emblem: The Sacred Stones
25. Mario Kart: Double Dash!!
26. Marvel vs. Capcom 2
27. Pokemon Gold/Silver
28. StarCraft
29. Super Smash Bros. Melee
30. The Legend of Zelda: Skyward Sword
31. Luigi's Mansion
32. Diddy Kong Racing
33. Guitar Hero III: Legends of Rock
34. Sonic & Knuckles
35. Assassin's Creed II
36. Pokemon Snap
37. Resident Evil 4
38. Gears of War
39. Banjo-Kaooie
40. Banjo-Tooie
41. Pokemon Stadium
42. The Elder Scrolls V: Skyrim
43. Super Mario Galaxy
44. Sonic the Hedgehog 2
45. Halo: Combat Evolved
46. Pikmin 2
47. Pokemon X/Y
48. SoulCalibur II
49. Animal Crossing: New Leaf
50. Conker's Bad Fur Day