Alternate color
Press [A], [B], [Y], or [X] at
the title screen to change Tinstars color when you start a new
game.
Bonus target
Shoot everything except the bottle during the practice
bottle shooting game at the start of each day. Watch for the orders
to change from "Shoot 'em Down" to "Shoot Target".
Shoot the bottle and a target will appear that may be hit for
extra points.