The fourth Era has 7 cargo engines named after ancient gods & heroes, 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.
Apollo
Requirements:
Research Cost: 45 Research Points
Slots: 1 | Reliability: 50% | Acceleration: 2/20 | Speed: 90 km/h | Tractive Force: 8
Ares
Requirements:
Research Cost: 30 Research Points
Slots: 1 | Reliability: 95% | Acceleration: 8/20 | Speed: 145 km/h | Tractive Force: 5
Horus
Requirements:
Research the Ares
Research its Acceleration & Tractive Force upgrades
Research Cost: 40 Research Points
Slots: 1 | Reliability: 70% | Acceleration: 2/20 | Speed: 260 km/h | Tractive Force: 8
Neptune
Requirements:
Research the Apollo or Ares & their required upgrades
Research Cost: 55 Research Points
Slots: 1 | Reliability: 70% | Acceleration: 20/20 | Speed: 105 km/h | Tractive Force: 7
Thor
Requirements:
Research the Hermes or Neptune & their required upgrades on American Dream Scenario only
Research the Horus & its Reliability, Max. speed & Tractive force upgrades
or
Neptune & its Acceleration & Tractive Force upgrade
Research Cost: 60 Research Points
Slots: 1 | Reliability: 60% | Acceleration: 14/20 | Speed: 190 km/h | Tractive Force: 6
Poseidon
Requirements:
Research the Thor or the Hypnos & their required upgrade
Research Cost: 65 Research Points
Slots: 3 | Reliability: 80% | Acceleration: 10/20 | Speed: 170 km/h | Tractive Force: 19
Zeus
The Zeus is the Cargo Bonus Engine of Era 4. It can be bought in the Rail Nation Shop and can be won through the Lottery or by entering competitions in Era 5.
Slots: 0 | Reliability: 90% | Acceleration: 12/20 | Speed: 170 km/h | Tractive Force: 8
