The first Era has 7 cargo engines named after animals with one being a bonus engine.
You can open new engines by using research points generated by the Laboratory building within your Train Station. Only when you've researched the required pre-requisites can you begin to develop the next engine. At the end of each era, a coupling system is available, allowing engines to transport goods from the next era.
Note: No passenger engines are available to research on the American Dream scenario.
Swallow
Slots: 1 | Reliability: 70% | Acceleration: 18/20 | Speed: 60 km/h | Tractive Force: 2
Raven
Requirements:
Research the Swallow
Research its Acceleration & Tractive force upgrades
Research Cost: 10 Research Points
Slots: 1 | Reliability: 60% | Acceleration: 5/20 | Speed: 65 km/h | Tractive Force: 3
Rhinoceros
Requirements:
Research the Raven
Research its Tractive force upgrade
Research Cost: 20 Research Points
Slots: 1 | Reliability: 50% | Acceleration: 14/20 | Speed: 140 km/h | Tractive Force: 2
Donkey
Requirements:
Research the Rhinoceros + its Reliability upgrade
OR
Research the Whale + its Passengers & Acceleration upgrades
Research Cost: 25 Research Points
Slots: 1 | Reliability: 40% | Acceleration: 2/20 | Speed: 60 km/h | Tractive Force: 4
Falcon
Requirements:
Research the Donkey
Research its Acceleration & first Tractive force upgrades
Research Cost: 25 Research Points
Slots: 1 | Reliability: 70% | Acceleration: 3/20 | Speed: 160 km/h | Tractive Force: 3
Mole
Requirements:
Research the Falcon
Research its Max. Speed upgrade
Research Cost: 30 Research Points
Slots: 1 | Reliability: 90% | Acceleration: 4/20 | Speed: 70 km/h | Tractive Force: 4
Red Kite (Bonus)
The Red Kite is the Cargo Bonus Engine of Era 1. It can be bought in the Rail Nation Shop and can be won through the Lottery or by entering competitions in Era 2.
Slots: 0 | Reliability: 100% | Acceleration: 10/20 | Speed: 120 km/h | Tractive Force: 4