Change screen font
Enter the following controller actions at the player selection screen.
Earthquake font
Press Right, Left, Right(2), Up, Right, Left.
Expanding font
Press Up, Down, Up(2), Down, Left, Up.
Normal font
Press Left, Right, Left(2), Up, Left, Right.
Maze mini-game
Press Up(2), Down at the "call-up" screen. Press Down(2), Left(2), Right, C at the main menu for a larger maze.
Sound test
Press Up(3), Left, Right, Left, Right, Up at the main menu.
