Thanks, yeah your set is awesome!
Here's a couple work-in-progress spine sets I've been toying with lately. I will mention that with the artwork on these I didn't have the most hi-res quality images to work with, so I had to do a little Photoshop smoothing. But I think they'll look fine once printed.

First off, you're probably wondering why I have Donkey Kong Country first. Chronologically Donkey Kong Land is a sequel to DKC. I also kind of like to think of the Color version of DKC as being part of the Donkey Kong Land set, rather than part of the GBA DKC releases. As such, I put it first and added the unofficial "Donkey Kong Country Color" title to differentiate it from the GBA DKC. I also made the background more yellowish because thats what I think of when I think of DKL, and it also differentiates it from my next spine set.

Here's my take on the DKC GBA ports. Not much to say, except I kept the background green to match the correct GBA coloring. Maybe someday I'll go nuts and make a complete chronological set: DKC (color), DKC (GBA), DKL, DKC2, DKL2, DKC3, DKL3. That'd be quite a set...

I wanted to keep the different color schemes on the different games and use this cool art from one of the Game & Watch Gallery games. There was kind of a blank spot under DK, and being a fan of Mr. Game & Watch in Brawl, I added him there (he is after all the official mascot of the G&W games).