# Dissenting Opinions

### Sybil Protection

By allowing any F2P player to obtain an initial pack, attackers could sybil attack the economy by creating endless F2P accounts and selling those items in the marketplace for free.

**Solution:** The Tradeable system solves this, by implementing an IAP between converting an in-game item into a Tradeable Item (NFT).

### Walled Garden

This model stops working if items are tradeable outside of the game’s marketplace.

**Solution:** Launch collection in popular marketplaces to collect royalties even if they exit the circular economy.

Please refer to the following diagram for a visual overview of the OverKnights economy (needs to be recreated for clarity):

<figure><img src="https://201488380-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FHvEDmaMTncxIxShyxdPg%2Fuploads%2F5bnAoXgGaJEAsATv53LB%2Fimage_.png?alt=media&#x26;token=462b4aa5-726e-4048-9570-988459b4ded6" alt=""><figcaption></figcaption></figure>
