WIKIBeginner Guide
Inside the Eden Engine locomotive cab in Frostrail

Home/Train

The Eden Engine

Frostrail Train Systems

The armored steam train is the party's transport, warmth, power network, workshop, storage space, and shared fail state. The pages below distinguish shipped-development facts from longer-term plans.

Last verified August 26, 2026 · 6 train-system pages indexed

Operating the Eden Engine from the cabCore locomotive

Eden Engine

The Eden Engine is the crew's mobile fortress and the heart of the run. It must be fueled, powered, driven, maintained, and defended.

  • Provides travel, heat, power, crafting space, and storage
  • Engine upgrades affect speed and pulling weight
  • Its destruction is a developer-stated game-over condition; exact stats remain TBA
Open full entry ›
Expanded carriage interior with workbenches and tanksReinforcement

Upgrades

The train can be reinforced and customized with walls, hatches, doors, weapon stations, crafting facilities, and engine improvements.

  • Engine upgrades affect speed and pulling weight
  • More carriages require more power
  • Upgrade costs, names, and unlock order remain TBA
Open full entry ›
Wooden freight cars moving through the tundraExpansion

Carriages

Additional carriages expand the mobile base and create room for crafting stations, storage, protection, and crew functions.

  • More carriages increase the Eden Engine's pulling-weight and power demands
  • Walls use grid-snapped construction
  • Named carriage types, capacity, and exact limits remain TBA
Open full entry ›
Fuel canisters in the cab hotbarBranches, logs & charcoal

Fuel

Fuel keeps the Eden Engine moving and warm. Branches, logs, and charcoal have been named by the developer as fuel sources.

  • Fuel and power are connected but distinct operating concerns
  • Fuel consumption and burn times: TBA
  • Resource processing ratios: TBA
Open full entry ›
POWER and HEAT machinery inside the trainOnboard systems

Power

The Eden Engine generates the power needed by the train and its facilities while also serving as the crew's major heat source.

  • Power management is a confirmed train responsibility
  • Consumers, grid limits, and generation values: TBA
  • Loss-of-power consequences beyond broad survival pressure: TBA
Open full entry ›
Crew firing from a damaged carriage at a track-side threatRevenant attacks

Train defense

Train-defense encounters are being integrated with obstacle-clearing gameplay. Developers have also discussed Revenant waves and mounted weapons such as machine guns or cannons.

  • Train defense was listed in the May 2026 development update
  • Mounted weapons are a developer-described plan, not final balance data
  • Encounter schedules and damage values: TBA
Open full entry ›