Oh wow. I can make out a NES, SNES, N64, game cube. Then a sega Genesis.
what else you got up there ?
Oh this isn't my setup, just a pic I found online depicting a room with TWO televisions in it.

It is a rather impressive lineup!
But if you wanna know my personal arsenal of gaming systems (well, plus my son's), it is:
1 Atari 2600 gaming console
1 Atari 400 personal computer/gaming console
1 Wii U
1 Nintendo Switch
1 Raspberry Pi with ROMS totaling ~150 vintage games
1 Alienware Aurora r14 gaming computer
I think that's it. The old Atari systems do work, they do have gaming cartridges, and I have them hooked up to my college 23" tube TV, which is a GE brand.