The Pokemon Company is adding a new mythical Pokemon known as Meltan, which will debut in Pokemon GO. And now, the Pokemon Company has revealed two new videos which reveal more details on the new Pokemon species. The videos are for both Pokemon GO and Let’s Go Pikachu/Eevee, which means Meltan is coming to all three games.

The Pokemon Company also revealed that players need a “Mystery Box” item in order to encounter Meltan. Players may receive this by sending a Pokemon from Pokemon GO to either Let’s Go Pikachu or Let’s Go Eevee. Pokemon GO players will be receiving extra bonus items after they complete the transfer, and the first time they do so will include the Mystery Box. Each player can only obtain one Mystery Box at a time.

Once they receive the Mystery Box, they must then conduct a complete Special Research, which they will introduce to Pokemon GO later this year, to obtain Meltan. After completing the Special Research, players must then open their Mystery Box, and then Meltan will appear. The Mystery Box will then close and won’t be opened for a time.

As for Let’s GO Pikachu and Eevee players, they can only receive Meltan via Pokemon GO transfer.