Gameboy Color: access to GB and GBC games
DS Lite: access to GBA and DS games
3DS: access to DS and 3DS games (and some Virtual Console games)
Wii U: access to GameCube, Wii and Wii U games (and some Virtual Console games)
Switch OLED: access to Switch games (and the NES + SNES libraries of Nintendo Online)
PSP: access to digital PS1 and digital/retail PSP games (and UMD movies)
PS Vita: access to digital PS1, digital PSP games and digital/retail Vita games
PS3 Fat: access to PS1, PS2 and PS3 games
PS5: access to PS4, PS5, PSVR1 and PSVR2 games
Xbox Original: access to retail Xbox Original games
Xbox One X: access to some Xbox Original games, many 360 games and all "One" games
Xbox Series X: access to some Xbox Original games, many 360 games, all "One" games and all "Series" games
Android phone and tablet: access to most Android games
iPad Air: access to most 32-bit iOS games
iPad Pro: access to most 64-bit iOS games
Steam Deck: access to most PC games, most home computer games and most console games up to PS3/360/Switch
PC: access to all of the above and many more systems, including PCVR games and awesome mods for enhanced visuals/gameplay
(texture mods, balancing mods, VR mods, raytracing mods, total conversion mods...)
