Inventory slots
A finite number of item slots the player must manage, forcing decisions about what to carry, drop, or leave behind. Resident Evil 4's grid-based briefcase inventory turns carrying capacity into a spatial puzzle (rotating and arranging items for maximum efficiency), while Diablo III's slot-and-stack system gates how much loot a player can hold before returning to town. Designers use limited inventory to create meaningful resource-management tension (do I keep this rare drop or the healing item?), to pace return-to-town or stash trips, and — in the RE4 grid case — to turn inventory management itself into an engaging spatial puzzle rather than pure friction. Key decisions: slot count and expansion options (purchasable or found upgrades), stacking rules for consumables/materials, whether inventory management pauses the game (safe, deliberate) or happens in real time (tense), and UI/sorting tools at scale. Pitfall: inventory limits that exist purely to annoy, with no meaningful decision attached (just tedious trips back to a stash), are friction without gameplay — the limit should force genuine prioritization choices, not just chores.
- Dev effort: Medium
- Timing: Real-time or turn-based
- Common in: survival-horror, arpg, rpg