I have come up with my own solution to help get my collection looking a little bit cleaner while sitting on the shelf next to NES and SNES games. Basically I have done a minimal amount of work in Photoshop creating a spine to go over the horizontal cover's spine. I went with black over the red of Shenske's here on the site mainly because the black fits in a little better when lined up with NES/SNES games.
These are literally the
exact same as the regular horizontal covers (size, details, etc...) just with a different spine, and a
few minor tweaks here and there to keep them consistent.
https://drive.google.com/folderview?id=0BzLa9fgZNcqQSTF1SzI1Wm9neE0&usp=sharing ^^^ That is a link to my Google Drive folder where I am putting all my custom N64 covers. They aren't all done, as I don't have a complete collection. I am just putting this here incase people want to use them.
Feel free to request one if you like them, if not, it's cool no big deal. Just another option for people 
EDITI uploaded
n64_spine.psd to the same folder so you all can just use it ... also, it appears blank, but that's only because the layers are hidden and I'm too lazy to change it
