Lives, credits, and more

To get extra lives and more, do the following. Highlight the System Configuration Option. Then press and hold R, and press B. when the System Configuration screen appears, press L and R on Controller 2 simultaneously for the Special Environment to appear. Press A, B, X, and Y on Controller 2 simultaneously to call up a Restricted Stage Select, then press Start and Select on Controller 2, so you can get up to 30 Ships and 99 Credits. (At the end of the game you won't get the millions of points.)