I'm not very active in the forum so I will just post the full list right away. Hopefully I do not mess it up to much.
Might keep track of this list for my own enjoyment, it is fun to see when new games can move old favorites. The top 4 have been there for quite some time.
If I played multiple releases of the game, each system is added.
1. Resident Evil 4 (NGC, PS2, Wii, PS3, Switch)
2. Super Mario Bros 3 (NES, SNES, Switch)
3. Heroes of Might and Magic 3 (PC)
4. Diablo (PC, PS1)
5. The last of us (PS3)
6. The Legend of Zelda Skyward Sword (Wii)
7. Super Mario Galaxy 2 (Wii)
8. The legend of Zelda a link to the past (SNES, GBA, Switch)
9. Fire emblem (GBA)
10. Uncharted 2 (PS3)
11. Super Mario Galaxy (Wii)
12. Starcraft (PC)
13. Super Mario Maker (WiiU)
14. Phoenix wright ace attorney (DS, 3DS, iOS)
15. Super Mario Maker 2 (Switch)
16. Warcraft 3 (PC)
17. Super Mario World (SNES)
18. Legend of Zelda Twilight princess (NGC, Wii)
19. The Elder Scrolls V - Skyrim (PC)
20. The Legend of Zelda Ocarina of Time (N64, NGC, 3DS)
21. Mario Kart Double Dash!! (NGC)
22. Pokemon Crystal (GBC)
23. Advance Wars Dual Strike (DS)
24. Uncharted 3 (PS3)
25. Super Smash Bros Melee (NGC)
26. Conkers Bad Fur Day (N64)
27. Hotel Dusk Room 215 (DS)
28. Pokemon Snap (N64)
29. Punch-Out!! (NES)
30. Donkey Konga (NGC)
31. Super Smash bros (N64)
32. ICO (PS2)
33. The Legend of Zelda Oracle of Ages (GBC)
34. Super Mario Land 2 - 6 Golden Coins (GB)
35. Metal Gear Solid (PS1)
36. Pokemon Yellow (GB)
37. Chu Chu Rocket (Dreamcast)
38. Secret of Mana (SNES, WiiVC)
39. Elite Beat Agents (DS)
40. Eternal Darkness (NGC)
41. League of Legends (PC)
42. Chrono Trigger (SNES, DS)
43. Kingdom Hearts (PS2)
44. Smash Bros Ultimate (Switch)
45. Tyrian (PC, DS (homebrew), iOS)
46. Tekken 3 (PS1)
47. 42 all time classics (DS)
48. New Super Mario Bros (DS)
49. RC Pro Am 2 (NES)
50. Breath of Fire (GBA, Switch)