Play as a Martian
Press Right, Left, Right, Up, Down, Left, Right, Up(2) at the main menu (front end).
Mars track(s)
Pause game play then press Left(2), Right(2), Left(2), Right(2), Down, Left, Right.
Wide-angle mode
Pause game play then press Left(3), Right(3), Up(3), Down(3), Left(3), Right(3).