Keys are Bomb is an unlockable challenge in Benighted Soul, a mod for The Binding of Isaac.

Description:
• Destination: ???
• Character: Benighted Lost
• Starting items:
keys x 10
Chest Chest (Consumable slot)
Broken Padlock (Smelted)
Match Stick
Bombs are Key

Costs bombs instead of keys to repair chest equipment.

Some chance to fire a bomb instead of key tear.

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Bonus on finished:
Benighted Lost starts with a random chest.

Unlock Benighted Lost.

• Download Benighted Soul from the Steam Workshop.