The Master Ball appeared in every Pokémon game since Pokémon Red and Blue. It's only possible to get one without using glitches in most games. It has a guaranteed chance to capture any Pokémon, except in Red and Blue, where there was a 1 in 256 chance it would miss.
This item was introduced for Super Smash Bros. for Nintendo 3DS and Wii U. It was revealed in the Smash Bros. Direct.
It works the same as a regular Poké Ball; when thrown, a Rare or Legendary Pokémon will appear from it and assist the player who threw the ball. However, there is a small chance that Goldeen will appear instead.
Mew can only be found by throwing Master Balls.
Pokémon that appear from Master Balls
These valuable, powerful balls can capture any wild Pokémon. In Smash Bros., hard-to-find Pokémon often pop out of them. You can easily identify a Master Ball by the destinct purple appearance and large M on the top. A Pokémon within a Master Ball may turn the tide of battle.
- Game Boy - Pokémon Red & Pokémon Blue (09/1998)
- 3DS - Pokémon X & Pokémon Y (10/2013)