InventoryExpansion
Expand your inventory with additional backpack slots. Toggle between standard inventory and backpack with a configurable key. Features animated UI, visual key hints, and automatic cleanup when leaving
Screenshots 5 screenshots
About this mod Author’s original text
MIMESIS - InventoryExpansion
🛟 Need help or found a bug? Get support at support.doodesch.de/inventoryexpansion.
Adds extra backpack inventory slots you toggle on demand with a configurable key, shown in a custom animated panel that slides in and out.
Carry more loot without permanently cluttering the standard 4-slot hotbar. Standalone, no MimicAPI required.
Features
- Adds 4, 9, or 16 extra inventory slots laid out as a square grid (2x2, 3x3, or 4x4); the count is configurable. The new slots are real, usable inventory, not just a visual overlay.
- Toggle between the standard hotbar and the backpack with a configurable key (default C); the mod reads the key live each frame.
- Extra slots render in a custom backpack UI panel that uses the bundled sprite and slides in and out with a short eased animation. If the image is missing it falls back to a translucent black panel.
- Shows a visual key hint on the panel displaying the currently configured toggle key.
- Context-aware slot scrolling: while the backpack is open, slot cycling affects only the backpack slots; while it is closed, it affects only the standard 4 slots.
- Cursor handoff on toggle: opening the backpack moves your selection to the first backpack slot, and closing it returns the selection to the standard inventory, so the cursor never stays stuck on a hidden slot. Each direction is configurable.
- Optional backpack-first pickup: while the backpack is open, items you pick up fill the backpack slots before the standard inventory (host / single-player only).
- Optional movement-speed reduction to 50% while the backpack is fully open, restored automatically when it closes.
- Automatically hides the panel during loading screens and map changes, and when you leave the game or return to the title screen.
Screenshots
Open with loot - the extra backpack slots hold real items.
Toggle with a key (default C).
Configurable grid sizes (AdditionalSlots) and the resting peek state with the key hint.
Requirements
| Component | Version |
|-----------|---------|
| MIMESIS | 0.3.0 (current Steam build) |
| MelonLoader | 0.7.3+ |
Dependency: LavaGang-MelonLoader-0.7.3.
Installation
Recommended: mod manager
Install through a mod manager such as r2modman or Gale. The MelonLoader dependency and the backpack asset are handled automatically.
Manual
- Install MelonLoader 0.7.3 into MIMESIS.
- Download this package and place InventoryExpansion.dll into MIMESIS/Mods.
- Place the bundled Backpack.png at MIMESIS/Mods/Assets/Backpack.png (an Assets subfolder next to the DLL). Without it the panel still works but renders as a plain translucent box.
- Launch the game once to generate the configuration file at UserData/MelonPreferences.cfg.
Configuration
Stored in UserData/MelonPreferences.cfg under the [InventoryExpansion] category. You can also edit these through a MelonPreferences UI.
| Option | Description | Default | Values/Range |
|--------|-------------|---------|--------------|
| Enabled | Enable InventoryExpansion functionality. When disabled, the mod will not modify game behavior. | true | true / false |
| AdditionalSlots | Number of extra inventory slots to add on top of the game's default inventory size. Valid values: 4, 9, or 16 (square grids 2x2, 3x3, 4x4). Other values are rounded to the nearest valid option. | 4 | 4, 9, or 16 |
| BackpackKey | Key to toggle backpack visibility. Press to switch between standard inventory and backpack. | C | Any Unity key name (case-insensitive). Invalid or empty values fall back to C. |
| ReduceMovementSpeed | When enabled, player movement speed is reduced to 50% while the backpack is fully open. | true | true / false |
| SelectBackpackSlotOnOpen | When opening the backpack, move the selected slot to the first backpack slot. | true | true / false |
| RestoreStandardSlotOnClose | When closing the backpack, return the selected slot to the standard inventory (the slot selected before opening). | true | true / false
Install & use Install: follow the bundled instructions
- Unzip the archive from playbuff and read the bundled readme / instructions first.
- Most mods rely on the game's mod loader — the usual route is a community mod manager (such as r2modman): pick this game, install, and it handles the loader and dependencies.
- For a manual install, put the mod files into the matching Mod / plugins folder inside the game directory.
- Launch the game to confirm it loaded; mods with listed dependencies need those installed as well.
Install locations vary a lot between mods — the bundled readme is the most reliable guide.
Install these first, or the mod will not work: