The fourth era features 3 passenger trains named after ancient gods and heroes, with one being a bonus engine.
You can unlock engines by spending research points generated by the Laboratory in your Train Station. Once the required pre-requisites are met, you can develop the next engine. At the end of each era, a coupling system becomes available, allowing engines to transport goods from the next era.
Note: You don’t need to research anything from previous eras to begin researching Era 4 engines.
- Hermes
- Requirements:
- Research the Apollo cargo engine
- Research Tractive Force I+II and Reliability upgrades
- Research Cost: 50 Research Points
- Slots: 1 | Reliability: 80% | Acceleration: 16/20 | Speed: 280 km/h | Passengers: 65
- Requirements:
- Hypnos
- Requirements:
- Research the Horus or the Neptune and required upgrades
- Research Cost: 60 Research Points
- Note: Hypnos is a multi-slot engine and takes up 3 slots instead of 1.
- Slots: 3 | Reliability: 50% | Acceleration: 2/20 | Speed: 90 km/h | Passengers: 390
- Requirements:
- Hades (Bonus)
- The Hades is the Passenger Bonus Engine of Era 4.
- It can be bought in the Rail Nation Shop or won through the Lottery or competitions in Era 5.
- Note: The cost decreases if purchased in a later era.
- Slots: 0 | Reliability: 90% | Acceleration: 10/20 | Speed: 230 km/h | Passengers: 110