2005 was pretty cool, for sure.
SW Battlefront II, Chibi-Robo (its Japanese release year), AC: Wild World, and Mario Kart DS are probably the best titles. Lego Star Wars: The Video game is also fun, though it would be outdone by pretty much every future Lego Star Wars game. Mario Party 7, Mario Superstar Baseball, and Super Mario Strikers are also fun.
I'll go with Battlefront II, narrowly.
Lifetime Sales Predictions
Switch: 161 million (was 73 million, then 96 million, then 113 million, then 125 million, then 144 million, then 151 million, then 156 million)
PS5: 115 million (was 105 million) Xbox Series S/X: 48 million (was 60 million, then 67 million, then 57 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima