Good videos. Recall Ballblazer being a big hit with my friends. Must have been on the Commodore 64 that they played it. I had only one friend who had a 7800 back in the day. Good looking game but not one of my favorites.
I really enjoy DK and DK Junior on the 7800. The trackball looks amazing. I use the Wico single version for Centipede. Can't find a second player anymore.