S tier
Nes, Snes, Ps1, Xbox 360, Dreamcast
A tier
Ps2, Gamecube, Xbox, Genesis, Ds
B tier
N64, Ps3, Turbo Grafx 16, Saturn, Sega cd, Psp, Gba, Switch, 3Ds, Wii, Wii U, Neo Geo
C tier
Jaguar, Nego Geo pocket, Vita, Xbox one, Ps4, Xbox series X, Ps5, Atari 2600, 3do
D tier
Game Gear, Lynx, Gb, Gbc, 32x, Intellivision, Colecovision ,Pc
I do like to collect certain special games for most systems all the way down to tier D but the father down from tier S the less frequent they become.