18. Ice Beam – Metroid (1986)
Sometimes you’ve got to be cold as ice towards your enemies and Samus Aran knew this well. One of the most effective ways of defeating Metroids in this game was by freezing them, making the Ice Beam a vital weapon to Samus’s survival. Whether you were freezing your enemies in order to blast them away with a missile, or just as a helpful platform to get you through the game on a smooth path, the Ice Beam was definitely a key upgrade to have.