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Mobile-base expansion

Frostrail Carriages

Additional carriages expand the Eden Engine into a larger mobile base with room for crafting facilities, storage, reinforcement, and crew functions.

Expansion confirmed / types TBA

Carriage expansion

The official store description says players can add carriages, crafting stations, and storage to build the train into a mobile base. This is a progression system, not merely visual customization.

Developer interviews add two constraints: walls use grid-snapped construction, and more carriages require more engine power because upgrades govern speed and pulling weight. The team does not expect extreme multi-storey structures.

  • Increase usable train space
  • Host production facilities
  • Add storage
  • Build walls on a snapped grid
  • Balance train length against power and pulling capacity
Operating the Eden Engine
Official cab view of the locomotive that defines the run.

Carriage facilities

Confirmed facility categories include crafting benches, refineries, weapon modification, repair, cooking, and storage. Public sources do not yet map these facilities to named carriage classes.

Crafting carriage
Not officially named
Storage carriage
Function confirmed; name TBA
Defense carriage
Not officially named
Facility placement rules
TBA
Expanded carriage interior
Official screenshot of usable interior space for facilities and storage.

Unconfirmed fields

Carriage names, dimensions, attachment points, build costs, power draw, mass, durability, maximum train length, placement restrictions, and unlock progression remain TBA.

Official Steam listing
Official Steam listing for unpublished values.

Official media evidence

These images come from the official Steam gallery or developer announcements. They document a pre-release build and may change before Early Access.

Frostrail locomotive pulling multiple carriages through the tundra
Official screenshot documenting the moving-base train and its connected carriages.
Players inside an open Frostrail carriage
Official screenshot showing a carriage interior used during co-op combat.
Frostrail carriage interior with furniture and machinery
Official screenshot showing onboard space for facilities and storage.
Sources used
Official: Official Steam store and screenshot galleryDeveloper interview: PC Gamer developer interviewDeveloper interview: GamingBolt lead-designer interview

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