I only have the Original Sega, SNES, XBox, PS1 as far as Retro systems.
I love NES and SNES
Sega, got the original Street Fighter 2 Arcade Machine
Do old MS-DOS games count? I'm primarily a PC gamer even today but man there are a LOT of really fun games on DOS - stuff like Realms of the Haunting and Hexen were my jam back in the day, I still go back to play my favourite classics to this day :D