firstly, without math we would not have 3d graphics, nevermind computers as they are now.
now to your video, nicely done, i like that you added a blurb for each game of why u liked it, a lot of people put vids like that on youtube, and just put the titles of each game.
As to your selection, I'd say you should've included metal gear solid, arguably one of the best games for the psx, with revolutionary and smooth gameplay, top graphics and incredible acting, enhancing a top-notch story.