I’m pretty sure it’s a demo of a yugioh soundtrack (which I already own the full version of) (but I didn’t own that icon) (which is going to become the favicon for my personal website very shortly)

Let me explain to you a couple things about what the fuck just happened to me when I clicked on kaiba.exe.

1. My screen resolution on my primary monitor was reduced to 640x480 while the game displayed in the top 640x480 pixels of my second monitor.
2. Dan Green yelled “Greetings duelists!” and told me I was about to go on a hecking archaeological dig or some nonsense and also I could listen to some tunes
   
3. the title of the window for this fourteen-year-old program is simply “kaiba” because no one ever expected it to be read
4. Seto Kaiba’s goddamn eyeballs follow the movement of your mouse