Our 3D printed cartridge shells are designed to work with Karri's Lynx Cart PCB (512Kb flash and 128B EEPROM). You can buy fully assembled cartridges (shell and PCB) from us as well. They have been modelled in the 'curved lip' style of cartridge. Contact us if you require custom colours or would like to have your game ROM flashed for you. We are also open to publishing your game ROM and selling it in the Atari Lynx Homebrew Games shop category.