PhD Bigger Backpack and Secure Storage Chest (A21)

PhD Bigger Backpack and Secure Storage Chest (A21) transforms your survival experience by dramatically expanding your carrying capacity and storage options. This essential quality-of-life mod increases your backpack to 120 slots and the Secure Storage Chest to 143 slots, giving you far more room to hoard loot, organize supplies, and spend less time shuffling inventory between trips.

Beyond the core expansion, the mod enhances player-built storage by making Wooden Storage and Writable Storage Boxes match the Secure Storage Chest’s massive size. It also unlocks a hidden combo-box logic that lets you lock portions of your inventory, excluding them from the sort and movement functions—a feature originally in the game’s code but disabled by the developers. While functional, this experimental option works as-is, so use it with that caveat in mind. The mod also fixes a critical bug where dropped backpacks could lose items upon death, ensuring your gear stays safe when scavenging goes wrong.

This mod requires a 16:9 resolution or better to display the larger interface properly. Note that it applies only to storage containers built after installation, and it’s incompatible with other mods that add sort or movement options to containers. Pair it with PhD Bigger Crafting Queue for a fully optimized inventory and crafting setup. Whether you’re a hoarder or a meticulous organizer, this mod keeps your wasteland operations running smoothly.