An unreleased Intellivision game from 1983. Math mode to this game. "Rocky and Bullwinkle must stop the evil Boris and Natasha from robbing a train full of priceless valuables. While Boris uses "Upsidasium" to float the valuables up to Natasha's waiting helicopter, Rocky must fly around and intercept them. When Rocky catches the valuables, he gives them to Bullwinkle for safe keeping."