The Metal Depot is a building released on August 11, 2015, during the Monorail 2015 Event, where it was limited time. It's a Crafting Station where the Player, spending some previously rewarded, will collect Metal to progress into the event. It's unlocked for free upon completion of A Rail of One City Pt. 7. A maximum of 200 Metal can be held at the depot. It was permanently added to the game with the release of the Dilapidated Rail Yard Expansion.