This is a warning to all those who play Metroid Prime and have finished the game once, when traveling through the energy core to get the ice beam, DO NOT go through the door in front of you in normal mode! Your game will freeze, and your gamecube will not work. Switch off the power and travel trough the door in morph ball mode.

That is not all, the missle expansions are more obius when you have finished.

(try using a super missle on the tree in the chozo ruins entrance way...)