# How Slot-Based Inventory Works: Pack for Your First TTRPG Expedition

Published: 2026-10-12
Updated: 2026-10-12

Treat slot-based inventory as a space budget: record limits, pack essentials first, and leave slots for loot.

## Article

I treat slot-based inventory as a space budget: count gear slots, not pounds. In this article’s example, I pack 9 of 12 slots, leaving 3 slots - 25% of my capacity - for loot or extra supplies. These are sample costs, not rules for every game.

Before I leave, I check:

- The rules: My slot limit, item costs, bundle sizes, worn gear, and overload penalties.

- The trip: Weapons, armor, food, water, light, and rope, with enough supplies for delays.

- The load: Where gear sits, how I reach it, and what I can drop or transfer if I run out of room.

A bag doesn’t add capacity unless the rules say so. I record used and free slots, then <u>update the count whenever my gear changes</u>. That keeps packing, supply use, and treasure pickups from becoming guesswork.

## You're Missing Out On These Inventory Systems!

## Check Your Game’s Slot Rules

Check the rulebook’s slot costs to see what fits in your expedition kit. Before you pack, write down how your game counts slots.

### Find Your Slot Limit and Item Costs

Record these three details:

- Limit: Find your slot limit on your character sheet or in the equipment rules.

- Modifiers: Note any changes from ancestry, armor, fatigue, or gear. Check whether injuries or fatigue take up slots.

- Bundle sizes: Write down each item’s slot cost and how many you can carry per bundle, especially ammunition, rations, torches, and coins. Check tags like bulky, petty, and stackable. Ask the GM how gear not listed in the rules stacks.

### Record Worn, Ready, and Packed Gear

Label each item worn, ready, or packed. Note its slot cost, location, and how long it takes to access. Then apply your game’s slot rules to each category.

Confirm whether drawing a weapon, opening a bag, or handing over supplies takes an action. A backpack or pouch adds capacity ONLY if the rules say it does.

Use these categories and your written notes when choosing what fits in a 12-slot expedition kit.

## Build a Starting Kit for 12 Slots

 
 

Slot-Based Inventory: Pack a 12-Slot Starting Kit

Use the slot limit and item costs you recorded to put together one expedition kit that fits your rules.

The values below come from a hypothetical house framework - not official rules for any particular TTRPG. You have 12 total slots. Ordinary weapons, shields, rope, and packed bundles take 1 slot each. Armor and other bulky items take 2. Each slot holds up to 4 meals, 2 filled waterskins, or 1 bundle of torches or lantern supplies. Replace these values with your game’s rules.

### Choose Gear for the Trip

Start with defense, survival, utility, and first aid. Pack your weapon, armor, rations, water, light, and rope first. Then add a backup weapon, tools, medical supplies, and a shield if needed.

Carry enough supplies to reach a reliable resupply point, plus a reserve for delays - especially on wilderness trips. Swap in trip-specific gear for climbing, darkness, water, locks, traps, cold, or disease.

### Worked Example: 9 Slots Used, 3 Free

Write down your 12-slot budget, then record each item’s quantity and slot cost. Worn armor and equipped weapons still take up slots in this framework. Gear is free only if your GM exempts it; otherwise, worn and packed items count.

Here’s one loadout that fits the 12-slot limit.

Hypothetical house-framework starting kit

Item
Quantity
Slots used

Melee weapon
1
1

Backup weapon
1
1

Armor
1
2

Meals
4
1

Filled waterskins
2
1

Light supplies
1 bundle
1

Rope
50 feet
1

Bedroll/compact camp bundle
1
1

Total

9

12 − 9 = 3 free slots. That leaves 3 slots for loot, spare tools, or emergency supplies. Under this framework, 8 meals take 2 slots.

### Balance Supplies and Loot Space

Every backup or bulky item leaves less room for loot. When the route is demanding, cut gear you can do without first.

Adding a 1-slot shield brings this kit to 10 slots, leaving 2 free. Adding another 4-meal bundle after that brings it to 11, leaving 1 free.

Give supplies priority over loot space when the route calls for it. If your pack is too full, trim the load before you leave.

## Handle a Full or Overloaded Inventory

Your kit is packed, but more loot means more decisions. Before taking anything else, check how much you can carry.

### Compare Loads Against Your Limit

If your pack is full, check the game’s capacity rules. Confirm the exact limit, how stacking works, and whether worn gear counts. Effects vary by game.

Load state
Common effect
What to do

Below limit
Within the carrying limit
Save space or add needed equipment

At limit
No unused slots; restrictions vary
Swap gear before collecting more

Over limit
May block pickups or apply movement penalties
Reduce the load or use transport allowed by the rules

These rules help you decide whether to drop gear, split the load, or stop looting.

### Make Room for a 4-Slot Relic

From the 9-slot starter kit above, a 4-slot relic changes the math fast: 9 + 4 = 13 slots. Drop 1 slot of gear to fit the 12-slot limit. If you are already full with three 1-slot treasures, free 4 slots to keep them and the relic.

Drop low-priority treasure first. Cut supplies only if you can still make the return trip. Leaving all three small treasures means you still need 1 more slot for the relic. Using rations or water can free space if your rules remove consumed supplies from inventory.

Passing gear to another character shifts the slot cost; it doesn't remove it. Check their available space, then update both inventories. Mounts, carts, or containers add capacity only if your rules allow it. Storage alone does not erase slot costs.

Record the relic’s location and your final load:

Relic: 4 slots; load 12/12.

## Conclusion: Check the Rules and Record Your Kit

Use the rules you checked to finalize your loadout, leaving free slots for loot and emergencies. Once you’ve chosen your kit, check the rules one last time.

### Run Through Your Before-Play Checklist

Check for slot mistakes before the expedition starts.

Confirm how your game calculates slot capacity, including any stat-based modifier. Review how worn or ready gear counts, along with stacking limits and container rules. Write the rulebook page number beside your slot limit.

Before the session, ask the GM about retrieval time, equipment transfers, and overload penalties. Check whether mounts, hirelings, and storage have separate capacities. Settle any unclear rules before the expedition begins.

### Update Your Equipment List

Label each item worn, ready, or packed. Record its slot cost, bundle size, and any exemption. Then note your slot limit, used slots, and free slots.

Recalculate after purchases, treasure finds, supply use, transfers, or armor changes. Track partially used bundles according to your game’s bundle rules.

## FAQs

### How do I budget supplies for a multi-day trip?

Start by checking your game’s daily food and water requirements. Work out how much you’ll need for the entire expedition and how many inventory slots those supplies will take up. Pack survival gear before luxury items.

Short on space? Track how many days your supplies will last instead of counting individual meals. Weigh the need for heavy items, such as rope or extra rations, against keeping slots open for loot.

### Which essentials can my party share?

Your party can pool supplies that aren’t tied to a specific character, including food, water, ammunition, and fuel, as long as the group keeps track of them. Poker chips or other shared markers can stand in for these supplies.

Tracking shared supplies helps the party account for their weight and the slots they take up - and decide what to carry or leave behind.

### How should I track partially used bundles?

Use checkboxes on your character sheet to mark off supplies as you use them. For long-term resources, track the days of supplies remaining rather than individual units.

Prefer something hands-on? Use index cards for temporary items, updating or discarding them as supplies run out. Or group resources into broader categories to keep that sense of scarcity without tracking every item.

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