Space time beam

From Wikitroid, the Metroid wiki

Space Time Beam
Featured in	Super Metroid
Damage	None
Effect(s)	Resets the game
Special uses	Fight old bosses or collect old upgrades
Obtained	Requires all beams to be equipped except for the wave beam

This beam is used in Super Metroid to cause a glitch that will reset the game. This doesn't reset the game as a normal reset; instead it causes all bosses to respawn and all upgrades to be reset, as well as all doors that started out not blue. This will crash your game if done incorrectly

To use this beam, you must not equip the Wave Beam and you must have the other 4 beams all equipped. To get past the fact that the Spazer Beam and the Plasma Beam cannot be equipped at the same time, you must equip the Spazer Beam first. Afterwards, you must go to a boot upgrade, then tap left and A at the same time. If done correctly the Plasma Beam should be equipped with the letters VAR next to it.

This should only be used in a fairly large room, and the game will lag for a short period after firing, so it is advised to stand as close as possible to a door. After that you just fire the beam once, and leaving the room will complete the reset. Before you activate the beam make sure your means to exit the room are open, because you cannot open doors with the Space Time Beam. Please note that the display at the top of the screen will go erratic and become covered in many orange squares, and this is normal behavior for this beam. You will know the glitch has worked when the game goes back to normal speed.