Pokemon GO players celebrated the feature's launch by battling Gigantamax versions of Charizard, Venusaur, and Blastoise, and then got spooky with a Halloween event featuring Gigantamax Gengar.
The battles against Gigantamax Venusaur, Charizard, and Blastoise are the hardest raids in Pokemon GO yet. For this reason, Niantic has increased the lobby size for Gigantamax Raids from 20 to 40.