Hidden Machine (HM)
Hidden Machine is a reusable item that taught a move also needed to cross obstacles in the overworld
Red and Green had five HMs: Cut, Fly, Surf, Strength and Flash. A move taught by HM could be removed only by the Move Deleter, added in Gold and Silver. Sun and Moon dropped HMs and replaced their field uses with Ride Pokémon called through the Ride Pager.
Main-series games; introduced in Generation I, Red and Green.
2 later changes
- Gold and Silver added the Move Deleter, the only way to remove an HM move.
- Sun and Moon removed HMs and replaced them with Ride Pokémon.
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