The Builder’s Box is a special storage container found only in Depots. Every Builder’s Box in the Depot instance shows the same shared inventory, so depositing in one makes the items visible in all others. The container has no capacity limit.
Important limitation: items inside a Builder’s Box are temporary. When you leave the Depot, anything left in the Builder’s Box is erased.
Key properties and limits
| Property | Behavior |
|---|---|
| Location | Depots only |
| Inventory scope | Shared across all Builder’s Boxes within the current Depot |
| Capacity | Unlimited item count |
| Persistence | Temporary; contents are cleared when departing the Depot |
| Team use | Allows your crew to pool materials at the Depot |
| Counting for builds | Depot build/upgrade stations count materials deposited in the Builder’s Box |
| Not suitable for | Long‑term storage, carrying items between Depots, or use on the train |

Practical uses at the Depot
- Stage materials for train upgrades and construction: drop metals, components, and other requirements into the Builder’s Box, then use the Depot’s build/upgrade stations. The station counts what’s in your personal inventory and the Builder’s Box together.
- Pool resources in co‑op: everyone in your session can contribute to the same temporary stash to speed up upgrades.
- Temporary overflow while looting or crafting: offload excess items to keep your personal inventory clear while you handle Depot tasks.
- Safe disposal of unwanted items: leaving them in the Builder’s Box ensures they’re removed once you depart.
Example workflow for an upgrade:
- Deposit required materials into any Builder’s Box.
- Go to the Depot build/upgrade station and complete the upgrade (it counts both the Box and your inventory).
- Return to a Builder’s Box to retrieve any leftover materials you still need.
Avoiding accidental item loss
- Do a final sweep before departure: open any Builder’s Box and remove valuables you want to keep.
- Move important leftovers to your personal inventory or your train’s containers before you leave.
- Treat the Builder’s Box as a disposable staging area—use it freely while docked, but empty it before you roll out.

Quick answers
- Where do I find it? In Depots.
- Can I access it on my train? No—Builder’s Boxes are Depot‑only.
- Do items persist to the next Depot? No—contents are wiped when you leave the current Depot.
- Is there a capacity limit? No—there is no capacity limit.
- Do multiple Builder’s Boxes differ? No—they all show the same shared inventory within the Depot.
- Does crafting or refueling on my train use the Builder’s Box? No—use your personal inventory and your train’s containers outside the Depot.
- Do Depot build/upgrade stations count what’s in the Builder’s Box? Yes—materials deposited there are valid for Depot builds and upgrades.
In short, the Builder’s Box is a high‑capacity, shared, Depot‑only stash meant for staging and cooperation. Use it to streamline upgrades and clean up inventory while docked, but always empty it before departing.