National Videogame Museum - You put cartridges in your console, you put cartridges in your Game Boy, but how about putting cartridges in your controller? This is the Mortal Kombat II Kontrol
Mortal Kombat II
Mortal Kombat King of the Hill Mode Brings Back Arcade Atmosphere - GameRevolution
Mortal Kombat II The Arcade Version - Mortal Kombat Secrets