Source: Nintendo Fun Club News 5 (February/March 1988)
Scan source: RetroMags
My grandparents had one of these.
It is, without even a doubt in my mind, the worst controller I have ever used.
You know that awful slider on the PSP that everyone hated?
Now imagine if it wasn't self-centering. It was just a disc free floating in a nebulous void. Oh but also it's worst than that, because for some reason the whole thing rests on a rocker and so it fucking tilts as you get to the edges???
Genuinely still cannot fathom what Nintendo was thinking with this thing.