Heater System
Level 1
Increases heat output efficiency. Each level reduces temperature drop rate by 15%.
-15% heat loss
Essential Systems
Insulation
Level 1
Better insulation reduces heat escape. Each level provides additional 10% heat retention.
-10% heat loss
Engine Power
Level 1
More powerful engine increases max speed and coin generation rate per km.
Max: 100 km/h
Capacity & Supplies
Add Seats
4 passengers
Expand capacity to rescue more survivors. +2 seats per purchase.
+2 capacity
Emergency Heat
0 in stock
Instantly adds +10° temperature. Press E to use in emergencies.
+10° instant
Coal Reserve
0 in stock
Auto-activates when temperature drops below 5°. Adds +8° instantly.
Auto +8° at 5°
Current Stats
Heat Efficiency
25%
Max Speed
100 km/h
Capacity
4
Supplies
0