Chests

Chests are objects that can contain pickups, items, guns, and more. Chests are always found in treasure rooms, but can also be found upon completing a room, using certain shrines, completing one of Winchester's games, or in secret rooms.

Chests can be found locked or unlocked; locked chests need a key to be unlocked, while unlocked chests can be opened for free. Chests found in treasure rooms are always locked, and always contain an item or gun, unless replaced with a Rat Note.

On every floor, one treasure room chest will contain a gun while the other will contain an item. This does not affect drops from destroyed chests, meaning a chest that would normally have an item can drop a gun when destroyed.

Upon entering a room with a chest, there is a random chance that a fuse will appear by the chest. If the chest is not opened within a short period of time, it will explode, leaving behind nothing. Any item or weapon that can spray a liquid (except for oil) can douse the fuse and stop it from exploding.

Mimics
Chests can rarely be replaced by Mimics. This chance increases with each point of curse the player gets, and all coloured chests (not including rainbow, synergy and rat chests) will be replaced by Mimics if the player is holding Mimic Tooth Necklace. A mimic can be spotted by shooting a bullet at it. Upon shooting it, the mimic will attack back. When the mimic is defeated he will drop what would normally be found in a chest.

Quality
The order of chest rarity and quality of items inside from most common to least common is:

All chests can contain various pickups in addition to an item or gun.

Specifically, Blue chests have a high chance of dropping items, over any other type of collectible.

Quality Frequency
Each floor has different chances for different chest qualities, with chances for higher quality chests increasing on later floors. This does not account for magnificence.

There are two different loot tables within the game, the Original loot table (which was the loot table before the Advanced Gungeons & Draguns update) and the Gungeons and Draguns loot table. These can be switched between in The Breach or title screen in the Gameplay menu of the Options menu.

Chest Destruction
Chests can be destroyed by shooting them. This will often cause them to drop inferior loot, such as pickups, items or Junk. They may instead explode, damaging the player if they are too close.

Destruction Tables
The chance of a payout is equal to the payout's weight divided by the sum of the weights of all possible payouts.

Special Chests
Synergy Chests=

Synergy Chests


Synergy chests are special chests added in the Advanced Gungeons & Draguns Update. Upon opening them, they will either turn red or blue and drop a random item or gun with random quality.
 * If blue, they will drop an item or gun that completes a synergy.
 * If red, they will drop an item or gun but with an unlikely chance of a synergy.

After freeing Synergrace, Synergy chests will appear randomly in the place of regular chests past the first chamber, and will always have a fuse. They have a roughly 5% chance to replace a normal chest, and one is guaranteed to spawn after defeating Old King. They can also be purchased from Synergrace.

Synergy chests cannot be mimics, even if the player is holding the Mimic Tooth Necklace. Synergy chests can, however, be glitched or rainbow. Rat Chests=

Rat Chests


Rat chests are special chests in the Resourceful Rat's Lair that can only be opened using keys dropped by the Resourceful Rat during the Punch-Out phase of his fight. Four rat chests always appear in the loot room after the fight, containing Elimentaler, Partially-Eaten Cheese, Resourceful Sack, and Rat Boots. Collecting all four items transforms the player character into the Resourceful Rat (changes the skin of the character while the 4 items are held).

It is possible for rat chests to be mimics, though not by holding the Mimic Tooth Necklace, which has no effect, other than bringing out a local mimic union member NPC to warn you that there are simply too many chests in the room and they couldn't agree to that deal.

Rat Chests cannot be opened with AKEY-47 or Shelleton Key, but they can be opened with Trusty Lockpicks and Drill.

If the Resourceful Rat is killed with one player dead in co-op, all the chests can be opened without the use of a key. This does not revive the other player.

If any of the four Rat items are obtained previous to defeating the Rat, opening any of the Rat chests will give an A tier item or gun. Rainbow Chests=

Rainbow Chests


Rainbow chests have a 0.0333% chance to replace a regular chest. Chests found upon clearing a room have a 0.001% chance to become a rainbow chest in addition to the normal 0.0333% chance. Rainbow chests also have a chance to disguise themselves as brown chests, only revealing themselves once opened, broken, or shot with a weapon that leaves water/goop.

Rainbow chests are never locked. However, they can be locked when they appear as a brown chest.

Rainbow chests contain 8 items and/or guns, which consist of approximately 15%, 54% and  31%. They can also transform into synergy chests upon being opened, containing 8 items and/or guns that synergize with items/weapons currently held, similar to an actual synergy chest.

During a Rainbow Run, a rainbow chest appears at the beginning of every chamber, and can contain items of all qualities. However, only one item or gun can be obtained from said chest, the others disappearing after the first is picked up. If a rainbow chest is found organically during a Rainbow Run, players will be able to obtain all eight items. Truth Chest=

Brother Albern's Truth Chest


Brother Albern's Truth Chest is a special chest that can be found in secret rooms alongside Brother Albern himself. By answering one of Albern's questions, which cannot be answered incorrectly, he will permit you to open the Truth Chest, which contains one to two random pickups, guns or items of random quality. The chest can be destroyed to receive Lies.

The Truth Chest can also be forcibly opened with the AKEY-47, and either destroying it or opening it with the AKEY-47 will cause Albern to exclaim "Betrayal! It can't be true!" before disappearing.

This chest is guaranteed to appear at least once in the Abbey of the True Gun, as there is a guaranteed secret room there that contains Brother Albern. Revival Chests=

Revival Chests


Revival chests appear during co-op when a player dies replacing all unopened chests. If it is opened or broken, the dead player will pop out of it, and other chests in the chamber will revert to normal. Keys are not required to open these chests.

It is recommended to check the chest's quality by looking at the map so that the players don't lose better grade chests for reviving, but instead using lower grade ones to do so.

Revival chests that were originally mimics will simply revive the dead player upon being opened and not attack. Glitch Chests=

Glitch Chests
Glitch chests have a 0.1% chance to appear, and they can only appear in the Keep of the Lead Lord, Gungeon Proper, and Black Powder Mine after the Beholster has been killed at least once and the player has entered the Gungeon more than 10 times.

Opening a glitched chest instantly takes the player to a glitched version of the next floor that contains nothing but a boss room with two glitched Beholsters. Defeating the bosses rewards the player with normal boss rewards in addition to 7 guns or items and numerous pickups.

Union Mimic Chest


See: Union Mimic Chest

A mimic with googly eyes which can appear in the rat chest room. This is simply triggered by having a Mimic Tooth Necklace, causing the Union Mimic Chest to tell the player there are too many chests and they couldn’t agree to having that many mimics. More info can be seen in the link above.

Bugs
Multiple chests in a secret room may result in getting two of the same item by opening them. It is possible for both to drop identical loot. Different items have different effects when doubled. This also works with Mimics.