Niantic is adding more Sinnoh-region Pokemon to Pokemon GO this month with an all new egg-centric event. The Pokemon GO Hatchathon will be bringing new Sinnoh Pokemon to the game for the first time ever.

Until November 27, players will find the likes of Magby, Rhyhorn, and Porygon in 2km eggs throughout the game. All of these Pokemon eventually evolve into Pokemon that first appeared in the Sinnoh region, including Magmortar, Porygon-Z, and Rhyperior. Particularly lucky trainers might even hatch a Shiny Elekid.

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You'll find the evolved forms of these new hatchlings in the wild as well, alongside other evolutions like Electivire, Togekiss, Mismagius, Honchkrow, Weavile, and Roserade. They'll need 100 Candy and a Sinnoh Stone to evolve, so start hunting down those items.

Pokemon GO started introducing Generation IV Pokemon into the wild back in October, and the game will be rolling out a few more updates in the near future, introducing new features that will make hatching eggs and other activities much easier. And let’s not forget Pokemon: Let’s Go! launched this week, meaning you can now nab the newest Pokemon, Meltan, by transferring a Pokemon from Pokemon GO to Pokemon: Let’s Go, Pikachu! or Let’s Go, Eevee!