ExpandTheGungeon

v3.0.8·Updated 2026-05-28

Mod that adds new floors and items. It's basically unofficial DLC!

About this mod Author’s original text

ExpandTheGungeon (BepInEx Version) - by Apache Thunder.

Features:

  • Updated version of old Anywhere mod. Use load_flow to load a DungeonFlow. Command syntax is mostly the same as old anywhere mod. Use "load_flow help" in console to get help on how to use this command.
  • Three new secret floors! Both with brand new tilesets pulled from unused tilesets from old versions of the game.
  • Glitch Chests now take player to a full floor with glitched enemies instead of just a simple 3 room floor that goes direct to the boss.
  • Fixed pit generated under sell creep on floor 4. Pit edge decoration of floor tiles near left side of sell creep is no longer missing.
  • Fixed issue intreduced in FTA update that made it trouble-some to drop passives into sell creep in Bello's shop.
  • Added "Junk" enemies. A small chance a floor could have 1 or 2 critters that spawn Junk or Ammo when killed depending on which enemy was spawned. This was an idea from TheTurtleMelon so credits to him for this one.
  • Added custom rooms to room tables used by most floors. This adds new room layouts to the game! Most room designs courtasy of TheTurtleMelon!
  • A glitched elevator has a small chance of appearing on the floor. This takes the player to a glitch chest floor. Can only appear on rooms 1-4 and can only appear once in a run.
  • The few Winchester gun game rooms that were missing icons now have icons. This oversight from original game devs has been fixed.
  • Custom secret rooms. Staring with a ultra tiny secret room that is the smallest possible size (2x2). This secret room can appear in places you won't expect one to fit so be on the look out!
  • Glitch Floors have "corrupted" appearence via addition of sprite objects that use random tile map sprites.
  • Additions/Improvements to DD20 modifiers:
  • Rat's Revenge now spawn rat traps instead of flame traps.
  • Infamous bug with Zone Control possibly soft locking the player if teleported out of room is fixed.
  • Don't Blink is changed to have enemies have stone effect instead of boring stun effect.
  • Blobulon Rancher can now spawn poisulins as well as the normal blobulins.
  • Two new DD20 modifiers. "Apache Thunder's Revenge". A custom modifier that has most of the Chaos mode mayhem from ChaosGlitchMod!. The second modifier is "Triple Trouble. A modifier for the Trigger Twins boss. As you can guess a third trigger twin will spawn.
  • Custom items!:
  • "Baby Good Hammer". An active item companion that summons a Dead Blow Forge Hammer to do your bidding! Thanks to Retrash for providing the item sprite.
  • "Corruption Bomb". A powerful bomb that corrupts the reality around you. Corrupted enemies can no longer attack. May have suprising effects on other objects. Test it out on things if you dare!
  • "Table Tech Assassin". Tables flipped by enemies are betrayed by their tables. Tabled flipped by enemies explode.
  • "Corrupted Junk". Junk warped by corruption. May grant player an obscene amount of a random consumable.
  • "Cronenberg Bullets". Bullets that have a chance to transmorgify enemies into a horrible cronenberg abomination. Sprite work courtasy of Neighborino!
  • "Mimiclay". Special item dropped by custom boss on custom secret floor. One time use active item. Clones another active or passive when used while said active/passive is spawned/near the player. This item idea/code was created thanks to Retrash.
  • "The Lead Key". Special active item taht will teleport the player to a new room not normally connected to the floor. Small chance of beign a shop, shrine, or chest room.
  • "The Bullet Kin Gun". Fires Bullet Kin....No further explenation needed.
  • "Baby Sitter". Companion item that gives you the COOP cultist as a non playable friend. Like Cop, he can die. When this happes you get curse and damage up.
  • "Rock Slide". Causes rocks to fall on your enemies! Amount of rocks is random. Sometimes all enemies get targeted while other times only a few do.
  • "Pow Block". Flips enemies an

Install & use Install: BepInEx plugin

  1. The archive from playbuff is the mod itself — usually a BepInEx plugin (a .dll or a plugin folder once unzipped).
  2. Recommended: use a community mod manager (such as r2modman) — pick this game, import the mod, and the manager sets up BepInEx and its dependencies for you.
  3. Manual route: install the BepInEx loader in the game folder, then drop the unzipped .dll or plugin folder into BepInEx/plugins/.
  4. Launch the game — the BepInEx console logs every plugin it loads; seeing this mod in the log means it is installed.

Mods with listed dependencies need those installed too, or they will not load. Options are usually changed in-game or in the plugin's config file.

Dependencies

Install these first, or the mod will not work:

MtG_API-Mod_the_Gungeon_API

File & checksum

Filename
ExpandTheGungeon-3.0.8.zip
File size
68.2 MiB