Geometry Dash Vault is a feature in the game that allows players to unlock it by collecting just 10 user coins. Once unlocked, players can enter specific terms or passwords in a text box and click a button to access its contents. Here's how it works: Unlocking the Vault: To access the Geometry Dash Vault, you need to collect 10 user coins. These coins can be obtained by completing various levels and challenges within the game.