We had a Mickey game that came with a dark maroon piece of paper with a bunch of Mickey poses on it, each one had a number or letter code (it would show a pose and you had to give it the code for the pose to start the game). The black ink on dark maroon paper was intended to prevent photocopying.

We also had this F1 racing game that had a bunch of F1 history in its manual and would ask F1 history trivia to get into the game.