This year’s Pokémon GO Fest Chicago taking place from June 13 to June 16 in Chicago, Illinois. Niantic is hosting a number of special activities for attendees, including rare Pokémon appearances. The Mythical Pokémon Jirachi has made its Pokémon GO debut at the Pokémon GO Fest 2019 in Chicago, Illinois. In celebration of Pokémon GO Fest 2019, the Water-type Pokémon Horsea has begun appearing more frequently globally as of June 13 at 9 a.m. PDT. Shiny Horsea, Shiny Seadra and Shiny Kingdra have also made their Pokémon GO debuts. A new GO Fest 2019 Tee is now available for free.