God of War hands down would be the best video game to adapt into a pinball machine. It has sex, mythology, and an epic story. Plus, the theme resonates beyond the video game market. Practically everybody is familiar with Zeus, Atlas, Aphrodite, etc. in one way or another.
It would make for a great pin with a killer art package and an awesome soundtrack. Build it and I will buy it. Assuming it doesn't cost $7,500 anyway.