Keys

Pickups

Hearts

Coins

Bombs

Keys

Batteries

Pills

Cards/Runes

Chests

Sacks

Keys are used to gain entry to many of the game's rooms, as well as open Locked Chests and Key Blocks.

Key	ID	Image	Worth	Additional Info	Unlocked By
Key	5.30.1		1	Humbling Bundle and Equality! can replace this with a Key Ring.
Key Ring	5.30.3		2	Doesn't spawn naturally. Can only be found by using certain items or encountering certain rooms.
Golden Key	5.30.2		∞	Will not add to the player's key count, but when picked up, it will allow the player to open any locked door, key block, or chest without spending any keys for the duration of the floor, even if the current number of keys is 0. There is a 1/50 chance for any given key pickup to be a golden key.
Charged Key	5.30.4		1	Fully charges your currently held active item upon pickup. Key Bum will pick this up, but will not give Isaac any active charge. Key Bum will drop a Lil' Battery when picking the key up.	Complete Pokey Mans (challenge #33)

Trivia

• Booster Pack #5 added an electrical graphical effect to Charged Keys.
  • Charged Keys start sparkling as soon as they spawn, helping players distinguish them from normal keys and prevent wasting charges.

Gallery

• 

  Rebirth concepts, including the Key Ring.

Bugs

Bug!	Charged Keys do not increment Key Bum's key count when picked up.