About the Game
Item effects depend not only on stats, but on trigger point direction and linkage conditions from positioning. Change positions to alter frequency and routes, creating your own chain rhythm.
Items vary in shape and size. Weigh active triggers against passive effects, carefully managing limited slots to find the optimal combination.
Each hero's exclusive items build different systems. Multiple tactical combinations meet 20 difficulty levels and unique mechanic monsters, relentlessly testing the depth of your builds.
Screenshots
8 images
Version Information
Steam Patch Notes
Official update history
# August 17, 2026 Changelog v2.3.8
## Features & Improvements
Mod Manager list now shows cover images
New Mod feature: Custom Events
Custom NPC art: full-body sprite and dialogue portrait
Rewards: gold / max health / max stamina / items
Costs:
Spend gold / max health / max stamina
Consume matching items
## Fixes
Fixed Roguelike Challenge endless mode granting no loot
# August 14, 2026 Changelog v2.3.7
## Features & Improvements
Workshop player status gain values now support negatives
Workshop item trigger rule restrictions have been improved
## Fixes
Fixed mods that modify built-in items being unable to participate in crafting
Fixed the item detail popup overlapping items
# August 12, 2026 Changelog v2.3.6
## Features & Improvements
New feature setting: Pinned Item Popup Delay
1s: default/current behavior
0.5s: new, pins after 0.5s
None: new, opens already pinned
Improved craft tree display: drag-to-pan scrolling (complex craft trees are easier to view in full)
Item detail popup settings moved to Features
## Fixes
Fixed pinned item popups with On Blur dismissal not switching when hovering a new item
Fixed enemy skills that clear player positive statuses incorrectly removing Ethereal status
# August 11, 2026 Changelog v2.3.5
## Features & Improvements
New style setting: Item Detail Popup Position
Follow Item: default/current behavior, always to the left or right of the item
Fixed: new, can stay fixed in the left or right game area
New style setting: Pinned Item Popup Dismissal
Automatic: default/current behavior, hides when the pointer leaves the area after pinning
On Blur: new, only hides when clicking outside the popup
Workshop supports custom statuses
Workshop supports more relic effect configuration
Codex can be filtered by Mod
## Fixes
Occasional Demon Altar asset loading failures
# August 7, 2026 Changelog v2.3.4
## Features & Improvements
Stronger Workshop custom item / relic capabilities
More relic effects that support custom tags
Workshop character settings can unlock all exclusive items
Wanderer / Ronin can now use all exclusive items (including Mod character-exclusive items)
## Fixes
Crafting ingredients no longer fail to recognize the relic slot
Mana Catalyst now correctly triggers items buffed by Arcane Lens
# August 4, 2026 Changelog v2.3.3
## Features & Improvements
Workshop custom item configuration
Stronger relic configuration, including custom tags and related options
Improved Mod schema docs for relic effects
Option to disable the item trigger flash effect
Support configuring trigger assets for items
# August 3, 2026 Changelog v2.3.2
## Features & Improvements
Workshop custom item configuration
New item transformation condition: transform on battle end
Improved transformation logic: when multiple conditions match, one is chosen at random
Workshop MOD: Random Dragon Egg (randomly transforms into one of three dragons)
Workshop custom challenge configuration
New challenge rule: shop item limits
Limit by rarity
Limit by type
Limit by character exclusivity
## Fixes
Workshop custom tag colors not applying in item descriptions
Battle log could not be opened while debugging Workshop items
# August 2, 2026 Changelog v2.3.1
## Features & Improvements
Workshop custom items now support GIF/WebP formats
Animated sprites are supported now! ヾ(@^▽^@)ノ
# August 2, 2026 Changelog v2.3.0
## Features & Improvements
Workshop custom items now support custom tags
Tag localization
Tag colors
Improved BGM selection with Mod filtering
Improved character select list with horizontal scrolling
## Fixes
Fixed Q-key selling a backpack also selling items attached to it
Improved Codex stuttering when opening
Fixed Wishing Well rewards being claimable again after save/load
# August 1, 2026 Changelog v2.2.9
## Features & Improvements
Workshop Tool: custom item debugging support
Open Training Mode from the tool to test custom items
Save backpack layouts used during testing
Changes to item config take effect immediately after refresh
Removed length limits on Workshop custom items
# July 31, 2026 Changelog v2.2.8
## Features & Improvements
Resolution settings now support borderless fullscreen
Unlocking the Nightmare Challenge achievement also unlocks the Normal Challenge achievement
## Fixes
Fixed crit rate and crit damage not showing on the stats panel
Fixed Combo Rune triggers not incrementing Infusion Crystal Wheel counters
Fixed items in the temporary area not participating in the craft panel
# July 30, 2026 Changelog v2.2.7
## Features & Improvements
Creative Workshop:
Monsters support attack sound and cast sound settings
## Fixes
Fixed missing translations in some locales
Fixed monster bestiary not unlocking correctly
Fixed battle counters carrying over to the next battle
Fixed relics dragged directly into the relic slot not being recognized by the synthesis panel
Fixed several Blowdart Tanuki bugs (duplicate triggers, not triggering Combo Rune)
Fixed Sun-piercing Bow/Repeating Crossbow damage reduction not applying when triggering Skyfall Wand
Fixed accessory buff items showing their own trigger effect when buffing (buffs no longer count as self-trigger)
Fixed demon altar event asset loading failure
Fixed Winged Fairy stacking not applying remove-debuff multiple times
Fixed backpack buff points not correctly highlighting matching item types
Fixed incorrect Moonlight Sword description
Current Release
Build 24605880
Uploaded Aug 07, 2026
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System Requirements
How to Install
Backpack-Dungeon.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Needed when extracting (WinRAR / 7-Zip) — not a site login.
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