The Coin Bag is a new element to Pokémon GO utilised to access the 999th & 1000th Pokémon, Gimmighoul and Gholdengo.

The Coin Bag is only obtainable through one way. To get it, you need to connect your Pokémon GO game to the Nintendo Switch titles, Pokémon Scarlet & Violet. When you send a Postcard from Pokémon GO to Pokémon Scarlet & Violet, you will receive the special Coin Bag.

The Coin Bag, when opened, provides a special bonus. For 30 minutes (or more during bonuses), you will have the ability to find the Coin Hunter Pokémon Gimmighoul and catch it. It spawns on average of one Gimmighoul every 1.5 minutes.

When the time runs out, Gimmighoul will stop appearing in the wild. However, you can re-open the bag after waiting for 1 day. After that time, send another Postcard to Scarlet & Violet and you'll be able to open the bag once more.

This is the only way to get Gimmighoul's Roaming Form between both the main series games and Pokémon GO.

Gholdengo is the evolution of Gimmighoul. It can only evolve from Gimmighoul in Pokémon GO by using 1000 Gimmighoul Coins. This means you need to utilise the Coin Bag repeatedly in order to capture enough Gimmighoul to evolve it into Gholdengo

To get Gimmighoul Coins, you will need to catch Gimmighoul, but you can also get them for spinning golden PokéStops that have had Sparkly Lure Modules activated on them