~ plastic for the games slots, if you want, but can use fabric. ~ bias tape or fabric for the edges, or anything to decorate it. ~ fabric, the amount dependant on size of project. ~ very basic sewing skills ~ a sewing machine ~ standard sewing notions, like thread, scissors, pins, etc.
I only things I've ever made before are a pair of curtains, and a cosmetic case with a zip. It was also my first project of this nature. I did most of it by eye, so it's a bit wonky, but the potential for making something really professional-looking is there, if you take more care than I did. I used leftover fabric from a pair of trousers, and I ransacked an old pencil case for the plastic. However, you can alter everything about this pattern making it smaller, adding handles, adding ties instead of Velcro, or making it more folio-styled with a zip, etc. This isn't meant for travel, since it holds so many games.
I wanted a case for all my games to keep in the house, so I could store their plastic boxes out-of-sight, but all the cases I found online would only hold 8.