Mewtwo has made his inaugural appearance as a Raid boss at the Pokemon Go Stadium event taking place in Yokohama, Japan. Many players were able to successfully capture the Legendary Psychic Pokemon during the event, and Niantic revealed that he will soon be available for Pokemon Go players worldwide. According to an official statement:

This new Raid feature operates slightly differently than what players are used to. Instead of simply joining a raid battle, players will be need to be invited. To receive an invitation, you must have successfully completed a raid “recently” at the Gym where the Exclusive Raid Battle is to be held.

The post does not specify how recent players need to have defeated the Raid Boss in order to qualify.

In addition to this announcement, Niantic has also decided to celebrate the thousands of limited-time-only Legendary Pokemon players have defeated by giving everyone another shot at catching them – this includes Articuno, Moltres, Zapdos, and Lugia. All four will be available to battle and capture from August 14 through August 31. So you’d better get out there and catch ‘em all before they pass you by!

Stay tuned to GameSkinny for more Pokemon Go news as it develops!