Looking for Famicom 4 score

[VegaVegas]

As the subject says: is it possible to buy this thing anywhere or you can only make it?? I haven't seen it yet, so I think it's only possible to make that thing. But anyway I'm wondering..... Nintendo made a possibility to play four-player games on Famicoms and didn't make any adapter??? "What were they thinking??!!"

[P]

Of course there were adapters, but there is not that much information about them for some reason. I think they were all third party and Nintendo didn't make any 4-player games themselves I think... I might be wrong though...

Here is a discussion with more information: http://www.famicomworld.com/forum/index.php?topic=5912.0