Tren de Invierno
El Tren de Invierno 
es un edificio mejorable de 9 niveles. En el nivel 9, pueden elegir entre tres estilos diferentes, y cada uno produce recompensas únicas. Pueden elegir entre el Expreso de Carbón (negro), El Expreso Paseo en Trineo (rojo), o el Expreso Siempreverde (verde). Añadir estos carros al final del tren proporciona bonificaciones únicas, y pueden encadenar múltiples carros en fila para mejorar la producción del Tren de Invierno.
| Tren de Invierno Niveles 1 - 8 | |
 Winter Train - Lv. 1 |
 Winter Train - Lv. 2 |
 Winter Train - Lv. 3 |
 Winter Train - Lv. 4 |
 Winter Train - Lv. 5 |
 Winter Train - Lv. 6 |
 Winter Train - Lv. 7 |
 Winter Train - Lv. 8 |
Upgrading the Winter Train requires a Winter Train Upgrade Kit. From levels 1 - 8, the upgrade can be applied to a Winter Train in your city simply by clicking on it. When you reach level 9, using the Winter Train Upgrade Kit will give you three options to choose from:
| Winter Train Lv 9 Choices | ||
 The Evergreen Express |
 The Charcoal Express |
 The Sleighride Express |
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 % Boost |
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The Train Cars can be attached to the end of a Winter Train building of any level, or to another car already in a chain. When connected to the Winter Train, the cars will boost the output of the Train itself. Each of the Cars provides a unique boost, and you can attach as many to chain as you like, providing you have space!
 Dining Car |
 Freight Car |
 Sleeping Car |
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| Connection to Winter Train Grants | ||
+4% Boost |
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