1. After purchasing a box, log in via https://karmaverse.io/ and follow the instructions to link your Metamask wallet to the Karmaverse.
2. Then click "Inventory>Boxes" and find your purchased boxes.
3. Open the box, and click "Inventory>Fighter/Zombie/Material " and the NFTs will appear.
4. To use them in-game, go to 'Vault' and deposit your NFTs.