To help Trainers in their battle against Eternamax Eternatus, Pokémon GO is giving everyone the chance to earn free Max Particles between August 20 and August 23 via YouTube

New events and content are continuing to be announced for Pokémon GO on a regular basis. Read on below to learn more:

Beginning with Pokémon GO Fest 2025: Max Finale, teams of up to 100 Trainers, divided into groups of four or fewer, may participate in a collective battle against a Gigantamax Pokémon or Eternamax Eternatus. The increased number of Trainers engaged will enhance the likelihood of success. This modification will be implemented globally and will remain in effect following the event’s conclusion.

Source: Official Pokémon GO site