---
title: "Era 4 Passenger Trains"
description: "Era 4 Passenger Trains"
url: https://support.rail-nation.com/en/articles/72-era-4-passenger-trains
collection: "Passenger Trains"
updated: 2026-10-29
language: en
alternates: [fr, de, cs, pl, ru]
---

# Era 4 Passenger Trains

Era 4 Passenger Trains

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](https://support.rail-nation.com/articles/49) 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
        
-   **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
        
-   **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