Check out this cool mod from moder extraordinaire Bacteria.
The multi-platform arcade system by Bacteria takes a bunch of TV plug n play games and puts them into interchangeable cartridges that can be plugged into one single portable arcade system.
This cool portable multi platform arcade system features a 5.4 inch screen and a D-pad controller, it also has video and audio outputs so you can connect it to your TV and the arcade system will run for 4.5 hours of continuous gaming in the built in re-chargeable batteries.
Here’s a video of it in action.
Bacteria via Technabob