Poison-type moves are a category of attacks in the Pokémon games that deal damage and often inflict the poisoned status condition on opponents. These moves are particularly effective against Grass and Fairy-type Pokémon, while they are less effective against Steel and Ground-type Pokémon. In battles, poisoned Pokémon take damage at the end of each turn, which can give the user a strategic advantage. Some popular Poison-type moves include Sludge Bomb and Toxic, each with unique effects and power levels. Understanding these moves can help trainers build effective strategies in competitive play.