A plug & play shaped like a soccer player shirt with the controller being a ball on a stick snapped into it.
Developer Credit#
In the data for Football Training ($03FC1A in the base ROM, $33FC1A in the PnP), Table Soccer ($03F89C in the base ROM, $0FF89C in the PnP), Soccer Arkanoid ($01EB5D in the base ROM, $11EB5D in the PnP), Soccer Ball ($07DF85 in the base ROM, $3FDF85 in the PnP) and at $07D190, there is a copyright string.
Copy Right YMK WorkRoom 2004Write by XuDongWeiYMK is Cube Technology's older name Yimeike pre-2008. Notably, Xu Dongwei appears credited as "XDW" in multiple Cube Tech games, such as Helli-Mission, Jumpman, and Ghost Zero Trap, with Catch Copy crediting them as "DW X".1
(Source: codyryan (discovery), gmestanley (addresses))