Atari 2600: 18 games
NES: 155 games
Game Boy: 60 games (grey GB carts only)
Sega Genesis: 16 games
Super NES: 53 games
Nintendo 64: 10 games
Game Boy Colour: 15 games (black GB carts + clear GBC carts)
Game Boy Advance: 40 games
Nintendo GameCube: 40 games
Nintendo DS: 44 games
Wii: 21 games
Nintendo 3DS: 12 games (1 digital, 11 physical)
Wii U: 12 games (1 digital, 11 physical)
Nintendo Switch: 5 games (2 digital, 3 physical)