New Items In Metroid: Zero Mission And Metroid: Samus Returns
Metroid: Zero Mission and Metroid: Samus Returns. These games took the only awful games in the Metroid series and made them great, and one of the biggest ways that they did so was by adding new items for Samus to use. Name the new items here.
Downgrade items are still items, and will be included.
List from Metroid Wiki: https://metroid.fandom.com/wiki/List_of_items_in_the_Metroid_series
Aeion Expansions and Unknown Items will not be included, since they don't give Samus any new abilities.
If an item is new in one game but not another (i.e it appears in exactly three of the four games), it will only be listed as an item from the game it's new in.