Pokemon Sleep Sets Mewtwo Event for September 2026
The event introduces Mewtwo's new main skill, Psychic Break (Berry Zone), which boosts energy from Mago Berries and stacks its effect, adding a new strategic layer to sleep research.
Reporting from 1 source: 4Gamer.net.
Pokemon Sleep will hold an in-game event in September 2026 where players can meet the Legendary Pokemon Mewtwo on Greengrass Isle and Greengrass Isle EX. Psychic-type Pokemon will be especially active. A separate event to meet Mew is also planned, with details to be announced later.
The Pokemon Company announced on August 4, 2026 that Pokemon Sleep will host an event in September 2026 featuring the Legendary Pokemon Mewtwo. The event takes place on Greengrass Isle and Greengrass Isle EX, where Psychic-type Pokemon will be especially active.
Mewtwo's main skill, Psychic Break (Berry Zone), increases Snorlax's energy and deploys a Berry Zone on the field. While active, energy from Mago Berries (Psychic-type) is increased, and the effect stacks each time the skill triggers until it reaches its cap. The Berry Zone persists even if Mewtwo is removed from the helper team, and players can switch to another Psychic-type Pokemon after deploying it. Mewtwo is a special Pokemon, limited to one per team.
For researchers who have not yet befriended Mew, a separate event to meet Mew is planned, with specifications to avoid wasting Mew's friend points accumulated on New Moon Day. Further details will be announced later.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.