Atari 7800 Custom 4-in-1 Multi Game Cartridge - Mercari Exclusive, Only 10 Made

This is a rare CPUWiz Labs project made just for fun, built using the last remaining custom multi-game PCBs. Only 10 of these created for a Mercari only exclusive collector sale, and no more will ever be made.

Each cartridge uses a micro-controller board that cycles between four different 7800 games each time you power-cycle your console—no switches, no menus, just clean hardware magic.

Every cart is individually numbered (X of 10), housed in a new custom shell with a professional high-quality label.

Includes cartridge only plus a small index card noting included game information. This listing is for one cartridge—the exact numbered copy shown in the photos. # 4 of 10.

This cartridge will not work in an Atari 2600+, 7800+, or any other emulation-based or modern “clone” console.. Works only on real vintage Atari 7800 hardware.

Mercari exclusive—ten total exist and will be listed at random here on Mercari ONLY. They will never be reissued. When they’re gone, they’re gone.