Super Metroid: Metroid Mission Rescue is a very large Super Metroid hack. The Normal version is used for this cartridge.

There is a new hud with different controls, to learn how to use it read this:
To switch between and to beams and Missiles, supers etc. The default buttons are 'y' to switch from beams to missiles, supers etc and vice versa.....And to change between them you press and hold the select button and then right or left to select and then let go once you have the one selected...Also holding down the select button and pressing up or down you can also switch from beams to missiles etc and vice versa...