The Gungeon is the primary location in the game Enter the Gungeon.
The Gungeon is a constantly evolving bullet hell fortress that elegantly blends meticulously hand-designed rooms within a procedurally-generated labyrinth bent on destroying all that enter its walls. But beware – the Gungeon responds to even the most modest victory against its sentries and traps by raising the stakes and the challenges found within!
The Breach
The Breach is the main hub of the game, where the player can select their Gungeoneer, speak to NPCs, purchase items with 
, and enter the Gungeon. The Breach contains the Hall of Knowledge, Ox and Cadence's shop, the Sorceress's room, and the Elevator Room.
Chambers
1. Keep of the Lead Lord
2. Gungeon Proper
3. Black Powder Mine
4. Hollow
5. Forge
Secret Chambers
?. Oubliette
?. Abbey of the True Gun
?. Resourceful Rat's Lair
6. Bullet Hell
Gallery
The Gungeon
Chamber 0 - Hall of Knowledge
Chamber 1 - Keep of the Lead Lord
Chamber 2 - Gungeon Proper
Chamber 3 - Black Powder Mine
Chamber 4 - Hollow
Chamber 5 - Forge
Chamber 6 - Bullet Hell
Chamber 1 from an early version of the game. The player is shown starting with an extra heart & blank, and different looking items as well as limited ammo for their starting gun. There is also no Hero Shrine present.
