I love DOOM 64. Beat it some time ago and still play through it every couple of years. It's definitely a spoooooky game. Low lighting, really unnerving dark ambient music... It's way more terrifying than the original games, although the PlayStation ports are pretty frightening also due to Aubrey Hodges' music.
He also did the score for Quake 64, which, despite my love for Nine Inch Nails, I actually like more than their original score. Makes me wish I could play the PC original with the option of hearing his tunes. I'm sure there's some way of doing it, I'm just not a tech savvy kinda guy.
But yeah, ever since receiving SNES games for Christmas, I never got rid of any game boxes. My NES boxes got either banged up or thrown out. 'Course, a lot of our NES games got stolen... Good ones, too. But I was much younger then. The few NES boxes I have are only around because they were inside of an unused cabinet for decades and I fished them out a few years ago, all bent and smushed to hell, but existing. Glad I still have my DuckTales box. Remember getting that for Christmas. Pretty sure I didn't get any games, but all the gifts I got were rad and I was perfectly content with what my parents gave me. Then came digging in the stocking over the fireplace. Normally there'd just be chocolate and maybe a cheap dollar toy. I was incredibly surprised to find...ZOUNDS, A BRAND NEW NES GAME AND IT'S DUCKTALES! :O Along with some chocolate gold coins, which was very apt. :)
But yeah, seeing game collections is fun. And somehow, seeing collections of older cartridge-based systems and their boxes is far more appealing than how many CD- or DVD-based games are lined up on a shelf. Carts and boxes have so much more appeal to me, aesthetically, as do the manuals from that time since they were often full-color with cool illustrations and that.