I dug this thing up from my friend's basement. The same place where I found the test/prototype Aigina's Prophecy for the NES. I'm hoping this is another gem, but I can't be sure. According to the google, this thing doesn't exist. Any idea what is is or what it's worth?
Reverend wrote:It appears to connect 2 NES systems together for whatever reason (that involves 2 players). It also appears to be arcade related...
No, from what you are showing it doesn't look like it could network two NES systems together. Are there any other ports on the thing that you did not include pictures of?
From what you have shown, it looks like something to connect the NES to some sort of external interface for the controller inputs and video/audio outs. I guess possibly it was part of some sort of in-store display system to showcase the NES.