Sophisticated Backpacks

The Sophisticated Backpacks mod introduces a system of upgradeable and customizable backpacks that provide convenient portable storage. These backpacks come in multiple tiers, each increasing capacity and the number of upgrade slots that expand functionality.

Using Backpacks

Backpacks can be carried as items or placed in the world as blocks, making them versatile. As items, backpacks open with a dedicated key (default B) or right-clicking. When equipped in the chest armor slot, they appear on the character. With Curios compatibility, they can also be worn in the "Back" slot.

When placed in the world (holding Shift and right-clicking), backpacks function as regular containers and support automation through hoppers, pipes, and other mod systems.

Tiers and Appearance

Backpacks progress through six upgrade tiers: Leather, Copper, Iron, Gold, Diamond, and Netherite. Each tier increases storage and upgrade slot counts.

Backpack appearance is fully customizable with two colors: main and accent. Dyes are applied in a crafting grid: left of the backpack for main color, right for accent color, same column for both. Colors can be mixed repeatedly, and reset by clicking the backpack on a water-filled cauldron.

Loot and Mobs

Backpacks and some upgrades occasionally appear in loot chests. Rarely, mobs may spawn wearing backpacks, sometimes with small loot inside, and even making sounds when appearing.

Upgrades

Pickup Upgrade

Automatically collects items into the backpack based on configurable filters. Regular version has 9 filter slots, advanced has 16 with mod, tag, and NBT filtering support.

Magnet Upgrade

Teleports nearby items into the backpack. Advanced version has increased range and can collect experience orbs, converting them to fluid with Tank Upgrade.

Filter Upgrade

Restricts which items can be inserted or extracted through automation.

Void Upgrade

Automatically destroys items matching filter criteria. Can be set to void only when overflowing or exclude manual insertion.

Compacting Upgrade

Automatically compacts items using 2×2 and 3×3 recipes. Advanced version supports both recipe types.

Feeding Upgrade

Automatically feeds the player from backpack supplies when hungry. Filters allow excluding harmful food.

Smelting/Smoking/Blasting Upgrades

Add furnace, smoker, and blast furnace functionality. Automated versions automatically take fuel and items.

Crafting Upgrade

Built-in crafting grid with item persistence. Integrates with JEI/REI/EMI and optimized for servers.

Stonecutter Upgrade

Built-in stonecutter that remembers last recipe and speeds up processing identical blocks.

Stack Upgrades/Downgrades

Modify maximum stack size in slots. Upgrades multiply limit (1.5× to infinite), downgrades divide (÷8, ÷16, ÷32).

Jukebox Upgrade

Allows playing music discs from backpack. Basic version has 1 slot, advanced has 12 slots with full playback control.

Restock/Deposit Upgrades

Transfer items between backpack and world containers with Shift+right-click.

Refill Upgrade

Automatically refills specified items in player's inventory from backpack.

Inception Upgrade

Allows storing other backpacks inside (one nesting level). Upgrades in nested backpacks remain functional.

Everlasting Upgrade

Protects backpack from all destruction: explosions, lava, fire, cacti. Doesn't despawn when dropped, floats above lava and void.

Toolswapper Upgrade

Automatically swaps tools in hand when mining or attacking with wrong item.

Tank Upgrade

Adds fluid storage. Capacity depends on backpack tier and increases with Stack Upgrades.

Battery Upgrade

Adds energy storage for charging energy-based items.

Pump Upgrade

Pumps fluids between backpack tank and world containers/blocks.

Experience Pump Upgrade

Works with Tank Upgrade, storing player experience as fluid. Can automatically repair Mending items.

Anvil Upgrade

Built-in anvil for repairing, renaming, and combining items.

Smithing Upgrade

Built-in smithing table for upgrading gear with templates.

Alchemy Upgrade

Automatically consumes potions and effect foods under specified conditions (sprinting, underwater, negative effects).

Infinity Upgrade

Creates infinite supply of items in designated slots. Available in admin (operators only) and survival (end-game) versions.

Compatibility

• Curios: Wearing in "Back" slot, repairing items in Curios slots
• Chipped: Upgrades for all Chipped workbenches
• Reliquary: Potion compatibility with Alchemy Upgrade
• Sawmill: Sawmill functionality upgrade
• Crafting Tweaks: Rotation, balancing functions in Crafting Upgrade
• JEI/REI/EMI: Recipe filling, colored backpack recognition
• Item Borders: Item border display
• TrashSlot: Correct trash slot positioning
• Create: Full compatibility through separate integration mod

Configuration

The mod offers extensive configuration options: slot counts per tier, upgrade parameters, disabling unwanted features.