The Rumble Station is one of many plug & play Famiclone systems, though this one is unique because it exclusively contains games published by the infamous Color Dreams.
Unused Graphics#
Several unused graphics can be found near the stars that appear in the background. The arrow on the left would have likely been used to select the games.
An ampersand is found within the font used for the game titles. It's possible that Master Chu & the Drunkard Hu was meant to be listed under its full title, but it was shortened as the name is too long to fit on screen.
(Source: Original TCRF research)