The engine died at the depot with a full load of passengers. Deploy helpers across the yard, answer the depot radio for scrap, and hold all five lanes until the engineer gets you moving.
Depot
StagesClear one to unlock the next
HelpersShared with the Run mode Store Room
SubjectThe depot radio asks from this
1–9Pick a helper, then click a yard tile
Click tileQuick-deploy menu on any empty tile
ROpen the depot radio when you want scrap
ABCDAnswer (time slows while it's open)
HoverUXUpgrade / sell a helper
ERight-clickShock Charge: throws boarders off
QOverclock (charged by right answers)
VSwitch camera: classic, bird's-eye, side
PEscPause
Lanes: ground monsters walk straight down their lane and chew through any helper in the way. Barricades buy time.
Exceptions: flyers pass over helpers, Leapers vault the front rows, Drill Worms tunnel under.
Depot radio: open it whenever you need scrap. Every right answer pays; quick answers and streaks pay more. A wrong answer scrambles the radio for a few seconds.
Steam purge: each lane can flush itself once, the first time a monster reaches the train.
Engineer: monsters on the locomotive make him take cover, and the repair stops.
Engineer working0%
Boss
Score
0
answer streak×0
Train health100 / 100
0 aboardPurges
Aegis
0
0 aboard: press E to shock them off
0scrap
Pinch to zoomDrag with one finger to look around
Store Room
Hire your helpers
Unlock helpers with coins. They're shared with Run mode, and deployed in the yard with scrap during a depot defense.