Pokemon Go is spotlighting another region of the Pokemon world this week. The game's Sinnoh Celebration event is now underway until January 17, and it features lots of Gen 4 Pokemon to catch, challenges to complete, and more.

　　Throughout the Sinnoh Celebration, the following Pokemon will be appearing in the wild more frequently than usual:

　　TurtwigChimcharPiplupBidoofCranidosBuizelDrifloonGlameowPuruglyHippopotasSkorupiSnoverShiny Buizel will also be appearing during the event, while the following Pokemon will be hatching from 5 km eggs:

　　KricketotBudewCranidosShieldonBronzorBonslyHippopotasCroagunk GameSpot Newsletters

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　　On top of that, various Gen 4 Pokemon will be featured as Raid bosses, including the Legendary Heatran. There will also be a Sinnoh-themed Collection Challenge to complete, as well as event-exclusive Field Research tasks that will reward you with Stardust and Gen 4 Pokemon encounters.

　　The Sinnoh Celebration runs until 8 PM local time on January 17. You can read more about the event on the Pokemon Go website. Niantic will continue celebrating different Pokemon regions in the run up to next month's big Kanto Tour event. A Hoenn Celebration is scheduled to follow from January 19-26. Coinciding with that event, the Legendary Pokemon Groudon and Kyogre will be returning to five-star Raids.

　　In the meantime, Pokemon Go's January Community Day is scheduled for this Saturday, January 16. The featured Pokemon this time is Machop, and if you're able to evolve it all the way into Machamp during the event, it'll learn the Dark-type attack Payback.