Glass Chest is an unlockable pickup in Fiend Folio, a mod for The Binding of Isaac.

Glass Chests require a key to open and their contents are always visible, similar as to holding Guppy's Eye.

Glass Chests have a 2% chance to contain a grand prize, that can be an item or trinket from the following pools:
• 80% → Glass Chest (common)
• 18% → Glass Chest (trinkets)
• 2% → Glass Chest (rare)

If a grand prize is not selected, it will contain one of the following:
• 30% → 3 random pickups
• 25% → 2 random pickups
• 20% → 4 random pickups
• 15% → random Glass Die
• 5% → random rune
• 5% → random soul stone

A random pickup can be one of the following:
• 35% → random coin
• 30% → random bomb
• 20% → random heart
• 15% → random key

If a Glass Chest is destroyed, it will disappear without spawning anything.

Defeat a boss in the Mirror Dimension.

• Check out the pickup description on the mod's external Wiki.
• Download Fiend Folio from the Steam Workshop.