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
Xbox Series X 16GB Video Game Console Black with Mortal Kombat 11 BOLT AXTION Bundle with 2 Controller Like New - Walmart.com
Pandora Box 9D 2500 in 1 4 Players wireless controller Set wireless arcade controller and gamepad 3d mortal kombat plug and play|Coin Operated Games| - AliExpress
Amazon.com: Original Xbox Wireless Controller Special Edition Customized by DreamController Compatible with Xbox One S/X, Xbox Series X/S & Windows 10 Made with Advanced HydroDip Print Technology(Not Just a Skin) : Video