This game has unused graphics.
The Wireless 60 is one of many "I can't believe it's not the Wii!" knockoff Plug & Play systems with games developed by JungleTac.
An unused .bmp file containing JungleTac's logo can be found twice in the internal ROM at
0x3488900. An identical graphic is also present in the Vii's internal ROM, as well as in both dumped multicarts released for it.