# Extras

- [Official links](/en/readme/extras/official-links.md)
- [Experience System](/en/readme/extras/experience-system.md)
- [Unique Auction](/en/readme/extras/unique-auction.md)
- [Pixel art Contest](/en/readme/extras/concurso-de-pixel-art.md)
- [Mystery Box](/en/readme/extras/mystery-box.md)
- [Presale](/en/readme/extras/pre-vendas.md)
- [Chests](/en/readme/extras/pre-vendas/caixas.md)
- [Container](/en/readme/extras/pre-vendas/container-surpresa.md)
- [Roadmap](/en/readme/extras/roadmap.md)
- [Guides](/en/readme/extras/manuais.md)
- [Start Here](/en/readme/extras/manuais/comece-por-aqui.md)
- [Presale](/en/readme/extras/manuais/metamask.md): Follow the steps for a safe purchase during the pre-sales stage of the projec.
- [1. Preparation](/en/readme/extras/manuais/metamask/1.-preparation.md)
- [2. Transaction](/en/readme/extras/manuais/metamask/2.-transaction.md)
- [3. FAQ](/en/readme/extras/manuais/metamask/3.-faq.md): Before opening a ticket with the support team, check out our FAQ section, your question may have already been answered.
- [Testnet Beta](/en/readme/extras/manuais/testnet-beta.md)
- [1. Preparation](/en/readme/extras/manuais/testnet-beta/1.-preparation.md)
- [2. Buying a chest on testnet](/en/readme/extras/manuais/testnet-beta/2.-buying-a-chest-on-testnet.md)
- [3. Opening a chest](/en/readme/extras/manuais/testnet-beta/3.-opening-a-chest.md)
- [4. Playing the Quarry](/en/readme/extras/manuais/testnet-beta/4.-playing-the-quarry.md)
- [Team and Contacts](/en/readme/extras/team.md)