So, this is how I modify the cases for GB/GBC games. You're left with a cleaner case, and a smaller opening where you cut which helps reduce any deformity that you'll get in the paper cover because it wants to creep into that open space.



If anyone wants, I will gladly write up a materials/tools list and a how-to. It's probably only for the level 100 OCD folks out there, but hell, we are classic game collectors with totally absurd amounts of old-ass games that have been meticulously categorized, carefully re-packaged, and lovingly organized on shelves. I gotta imagine that's there's plenty of people on this site that are OCD enough to try and get something like this as close to perfect as possible LOL!