# Mutation and Character customization

## Mutation

Open chests in the game and get additional attributes for your demon. By collecting 5 items of different categories, you can mutate your NFT demon and increase its rarity. So your demon can get more rewards in the game and become more beautiful and more expensive in the resale market.

## Character customization

NFT holders will be able to visually change their character – add a beard, change eye color, improve their physique or whiten their teeth.

Groof Street NFTs will have the ability to mutate and customize. This will allow holders to refine their NFTs and increase their rarity among other items in the collection. By increasing the rarity you will be able to trade your NFT on the secondary market and receive more benefits in Deviltroid, as well as personalizing your character according to your tastes

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