I'll pick games that I've beaten or played a lot of so I don't just pick the best-selling games or highest on Metacritic/Opencritic
GCN (Mario is playable in all)
-Super Smash Bros. Melee
-Super Mario Sunshine
-Mario Kart: Double Dash!!
-Paper Mario: The Thousand-Year Door
DS
-Nintendogs
-Mario Kart DS
-Animal Crossing: Wild World
-New Super Mario Bros.
Wii
-Wii Sports
-The Super Mario Galaxy games
-Mario Kart Wii
If I split up the Galaxy games to just include the first, Super Smash Bros. Brawl would be my next choice.
3DS
-Super Mario 3D Land
-Mario Kart 7
-Fire Emblem: Awakening
-Animal Crossing: New Leaf
PlayStation Vita
-Uncharted: Golden Abyss
-Persona 4 Golden
-LittleBigPlanet PS Vita
-Killzone: Mercenary
Wii U (Mario is playable in all)
-Super Mario 3D World
-Mario Kart 8
-Super Smash Bros. for Wii U
-Super Mario Maker
PS4
-Uncharted 4
-Marvel's Spider-Man
-Persona 5 Royal
-Ghost of Tsushima
Xbox One
-Minecraft
-Rare Replay: If this doesn't count, replace it with
-Halo 5: Guardians
-Forza Horizon 4
Switch
-The Legend of Zelda: Breath of the Wild
-Super Mario Odyssey
-Super Smash Bros. Ultimate
-Animal Crossing: New Horizons
Those are enough platforms to start. Most of the defining PS3 games I played on PS4, despite the fact that I got a PS3 later on. Similar with Xbox 360 and Xbox One. A lot of GBA I played was ports.
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: 122 million (was 105 million, then 115 million) Xbox Series X/S: 38 million (was 60 million, then 67 million, then 57 million. then 48 million. then 40 million)
Switch 2: 120 million (was 116 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
