I currently play on a PS3, PS4 and PC, though I do have a PS2, Nintendo DS, Gameboy Advance SP and a PSP, which I play occasionally.
I still own a working Original Gameboy in black, but I don't play it as all the games work on the Advance.
My brother has a Gamecube, but the controllers are broken and half his games have gone missing.
I used to have a PS1, but sold it once I got the PS2 as it was redundant. My brother also used to have a Dreamcast, which broke, though I sorely miss it.