Coleco Total Control 4
This is a handheld game with a choice of 4 cartridges - American football, Basketball, Soccer, and Hockey. The cartridge carries the overlay of the playing field and snaps onto the front centre of the main unit. The joysticks and other controls are mounted on 'wings' on the main unit, to the left and right of the cart.
The MESS emulation is still preliminary, and shows a few LEDs at this time. External artwork will be needed. It isn't known which cartridge is being used.
Here's the manuals for the system:
Last updated: 2015-02-20