Not as much as I used to have, koff~
PS3x2
PSP
Playstation Vita
Nintendo DS
Nintendo DSi
Nintendo 2DS
Nintendo SNES
Neo Geo X
As time went on, I had to cull systems and get rid of them to get new ones. I've have had several other Nintendo systems as well as:
PS1
PS2
NES
a 64
Gameboy
Gamboy slim
Gameboy color
Gameboy Advance SPx3
Gameboy Advance Micro
Sega Genesis
Sega Dreamcast
Game Gear
Virtua Boy
Minor PC capabilities
Oh, and I used to own a wide selection of floppy-disc text adventure games. I remember one being about surviving a zombie outbreak. I can't remember what it was called, but I wish I still had it, koffi~