Vault

A Vault room is a special room visually similar to The Chest. The door leading to a Vault has two padlocks on it, requiring two keys to be spent before gaining entry. Vaults contain various rewards for players, sometimes even lacking any rewards, making entering Vault rooms a gamble for players who have a limited supply of keys. A Vault has a chance to appear in place of an Arcade if Isaac is carrying 2 keys or more.

A Vault room always contains one of the following:

• Several chests, sometimes behind rocks and/or locks. Possible combinations include 4 golden chests, 4 chests with 1 of each type, 7 red chests surrounded with spikes, etc.
• An item from the Golden Chest Item Pool.
• A large number of pickups.
• Very few pickups (for an example, a single penny and 2 spiders).
• A large number of pennies with a donation machine in the middle of the room.
• Poop surrounded by flies with no items.
• A few dead shopkeepers.
• 3 trinkets.
• Some pickups.
• Key Master
• Nothing.
• Spiders
• A Donation Machine surrounded by coins
• 3 normal buttons
• Greed Fight

Gallery

• 

  Vault room with 3 chests.