Poké Balls are fundamental for catching wild Pokémon. The standard Poké Ball is available from the start, but as you progress, you'll unlock Great Balls, Ultra Balls, and specialized balls like Net Balls (good for Water/Bug types) and Dusk Balls (effective at night or in caves). Always carry a good supply, and remember that weakening a Pokémon and inflicting status conditions (like Sleep or Paralysis) increases your chances of a successful catch.
