If you’ve already completed the Let’s Go, Meltan quest and are looking for more of those precious Meltan candies, Niantic and The Pokémon Company will shorten the waiting period to open a Mystery Box to just three days.
You can get Mystery Boxes by connecting Pokémon Go to Pokémon Let’s Go on Nintendo Switch. If you transfer a Pokémon from your mobile device to the Switch game — this can be done after you reach Go Park in Fuchsia City, a location about three quarters of the way through Pokémon Let’s Go’s story — you’ll get a Mystery Box. Once opened, that box will spawn Meltan nearby. Using Pinapp Berries when catching a Meltan will score you extra candy — and you need 400 of those candies to evolve a Meltan into Melmetal.
Starting Wednesday, April 24, at 1 p.m. PDT, the waiting period to open a Mystery Box will decrease from one week to three days, and Shiny Meltan will have a chance to appear. Shiny Meltan will appear through May 5, a 1 p.m. PDT.