Here are some cheats and tips for the game Super Metroid.
Energy refill:
Note: This code requires the default controller setting to
be selected. Collect a minimum of ten missiles, ten super missiles,
and eleven power bombs. Perform the following actions when the
life meter has less than fifty points and the reserve energy tanks
are empty. Roll into a ball and press Select(3). Hold X
(a power bomb will be released), then hold L + R
+ Down. With all buttons held, the screen will turn white
when the power bomb explodes. The energy tanks will be now be
refilled.