The player controls the son of Mappy in a platformer game. He wants to find a wife but she won't marry him until Mappy can become a provider for his family. At the end of each level, there is a slot machine. Pulling the lever to the slot machine may allow the player to earn extra lives. After the mini-games, players access a shop, where they can buy various things with the money that they find during the game.

This game was released for the Nintendo Famicom in Japan only.

Mappy the mouse had a son named Happy. Happy has grown up and now wants to settle down with a wife. However, the girl he wants to marry won't agree to marriage until Happy can prove that he can provide for a family. So now it's up to Happy to collect a small fortune so he can please his would be spouse. Of course, the boss cat Nyamco and his legion of mukies stand in the way of making this an easy endeavor.