When our beloved handheld turned 20 we created a team game called Solitaire. It contained three popular card games: Klondike, Freecell and Solitaire. It also contained a jukebox from which you could buy background tunes for your games by spending Lynx Coins. You got the coins by playing games of course.
The Lynx coin was minted for Lynxopoly but due to restrictions in space on the cart it never appeared in the game. There was also some problems with the quality of the coin so it was never released at the Lynx 20 years birthday celebrations.
Half of the cart was filled with the animation for the credits to the tune of Johnny B. Goode. We even had a marching band to celebrate the Lynx birthday.