Seven research options cover brake efficiency, heat capacity, fuel efficiency, train health, engine force, boiler heat transfer, and carriage weight.
The upgrade pages list their material and blueprint costs. The game data does not provide numeric effect multipliers, so the wiki does not rank them by an unverified benefit.
| Name | Description | Values | Recipe and uses |
|---|---|---|---|
 Boiler Steam Generation Rate | Increases boiler steam generation rate | ||
| Brake Efficiency | Increases brake effectiveness | ||
 Eden Engine Fuel Efficiency | Increases Eden Engine fuel efficiency | ||
| Eden Engine Heat Capacity | Increases Eden Engine heat capacity | ||
 Eden Engine Max Health | Increases Eden Engine Max HP | ||
 Lower Carriage Weight | Decreases carriage weight | ||
| Train Engine Force Output | Increases train engine force output |
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