Enter the following codes at the title screen:

Code Effect

Press I, II, Right, Left, Right, Left, Down, Down, Up, and Up on controller three. Then, under the options menu, select ''Vmode' Arcade Mode Press Up, Right, Down, Left, Down, Right, I, II, and Left on controller four

Level Select - Press Up, Up, Down, Down, Left, Right, Left, Right, II, and I. You may select up to 9 credits in the options menu. Nine Credits
Press Up, I, Right, II, Down, I, Left, II, Up, and Select on controller five.

See Animation Sequences - Press Up, Up, Down, Down, Right, Left, Right, Left, I, II on controller two. You may select up to ten ships in the options menu