Frostrail train upgrades: every station and structure you can install in the demo, three carriage layouts and announced Early Access upgrades.
Frostrail Train Upgrades: What You Can Actually Change
Quick answer: In the demo, "upgrading the train" means fitting out its carriages by hand: placing a sorting table, a toolmaker's workbench, heaters, storage, walls and doors, and keeping the Eden Engine hot. There is no upgrade menu, no tier list and no currency. The engine upgrade tree, extra carriages and reinforced hull promised by the developers are Early Access features, not demo features.
We deliberately separate what the demo lets you build from what FakeFish has announced for Early Access. If a cost or tier is not in the build, we mark it unknown — the published sites that list "upgrade names and costs not published" are describing the same gap.
Demo upgrades vs announced Early Access upgrades
| System | In the demo (verified) | Announced for Early Access |
|---|---|---|
| Engine | Load fuel, ignite, set heat valve | Engine upgrades (store page wording: "upgrade the engine") |
| Carriages | Fit stations and furniture inside existing carriages | More carriages to attach |
| Hull | Build wooden exterior walls and doors | Reinforced walls |
| Stations | Sorting table, toolmaker's workbench, mess workstation, altar of mending, wooden chest, heaters | Dedicated weapon stations, storage stations |
| Progression | None — everything resets each session | Persistent progression between stops |
| Relics | None found in the demo | Relics found in dungeons that buff the train while carried aboard |
| Repairs | Wrench repairs fixtures; sorting table degrades 2% per item | Dedicated repair workstations |
That table is the honest answer to "what are the Frostrail train upgrades": today they are build decisions, not purchases.
Every station in the demo, and what it is for
| Station | What it does | Notes |
|---|---|---|
| Sorting table | Recycles loot into textile, metal and wood scraps; can unlock schematics | Loses 2% processing speed per item; repair with the wrench |
| Toolmaker's workbench | Crafts the wrench, crowbar, zip gun and scrap ammunition | The combat and repair hub of the train |
| Mess workstation | Craftable food station | No demo recipe required it; cooking presumably arrives with EA (unknown) |
| Altar of mending | Craftable station, appears with the same recipe tier as the mess workstation | Function not fully explained in the demo (unknown) |
| Wooden chest | Storage | Essential given the 40 weight cap |
| Small heater | Heats an enclosed space | Costs about five metal scraps |
| Wooden exterior wall / door | Seals a compartment so heat stays in | The single highest-value "upgrade" in the demo |
Sorting table first, workbench second, walls third, heaters fourth, chest last. A chest before walls is a cold room full of things you cannot carry.
Three carriage layouts that work
1. The starter cab (5 minutes of building)
- Sorting table against the inner wall, next to the door
- Toolmaker's workbench opposite it
- One exterior wall to seal the open side, one door
- Nothing else
Why it works: recycling and crafting happen in the same heated room, so you never carry scrap through the cold.
2. The workshop car (mid-run)
- Workbench centred, with a clear tile in front for placing large builds
- Chest beside the workbench for surplus metal
- Heater in the corner, away from the door
- Sorting table by the entrance so loot goes straight into recycling
Why it works: the workbench's placement ghost needs floor space. Cramming it into a corner blocks the very builds you need.
3. The dorm car (long sessions, EA-ready)
- Two heaters, one at each end
- Chests along one wall, beds or bedrolls if EA adds them (unconfirmed)
- Door kept closed at all times
- No crafting stations, to keep the heat volume small
Why it works: heating a small volume is cheap. Splitting your train into a hot work room and a hot sleep room beats heating one big hall.
The economics of fitting out a train
Everything you install competes for the same three materials:
- Metal scraps — wrench, zip gun, heaters, ammunition, most station builds. Always the bottleneck.
- Wood scraps and branches — walls, doors, chests, torches, fuel.
- Textile scraps — bandages, insulation, some furniture.
A realistic demo budget after the tutorial: one sorting table, one workbench, one wall plus door, two heaters, one chest and a zip gun. That is roughly all the metal the first two stops provide. If you want more, recycle aggressively — pans, knives, tools and metal boxes are the best sources. The conversion loop is covered in resources and recycling.
How the engine fits in
Upgrading the train is pointless if the engine is cold: an unheated carriage turns every station into a decorative object. Keep the pressure needle in its green band, set the heat valve deliberately, and set the brake before you leave the cab. The full machinery guide is Eden Engine upkeep, and the survival math behind it is in heat, food and weight.
What we expect from the Early Access upgrade tree
FakeFish has confirmed, across the store page and 2025-2026 updates, that Early Access will include:
- Engine upgrades that change performance, not just fuel load
- Additional carriages you can attach to the consist
- Reinforced walls for defence during train fights
- Dedicated weapon and storage stations
- Relics that grant temporary buffs while carried on the train
- Persistent progression that survives between stops
What is not published: upgrade tiers, material costs, whether upgrades are linear or branching, whether carriages are bought or found, and whether the engine has a level cap. We will publish the tree with real numbers once Early Access is live.
Common mistakes when fitting out a train
- Building a big open workshop. Heat escapes and the whole car stays cold.
- Placing the workbench against a wall with no floor space in front. Half your builds become unplaceable.
- Skipping storage. You end up leaving metal on the ground because you are at 40 weight.
- Putting heaters next to doors. Every door open dumps the heat you paid fuel for.
- Upgrading comfort before defence. A warm train with no zip gun is a Revenant delivery service.
Next: crafting and recipes, the demo walkthrough, and the release date and Early Access plan.
FAQ
Can I add new carriages in the demo? The demo starts you with a locomotive and a small consist, and building entirely new carriages is not part of the tutorial chain. What you can do is remodel the interior: exterior walls to seal rooms, doors, storage, workstations and heaters.
What does the heat valve do? It controls how much heat the Eden Engine pushes into the train. More heat keeps the cab and sealed rooms warm but burns fuel faster; at low settings the train stays cold and the crew starts losing warmth.
How do I repair the train? Use the makeshift wrench on damaged walls, doors and workstations. Stations also lose condition when used, which is why the sorting table drops 2% processing speed per craft and needs repairing eventually.
Sources
Official reference: Frostrail on Steam for the store page, system requirements and supported languages, and the Frostrail Demo page for the build tested here.
More Frostrail Guides
Frostrail Eden Engine guide: hatch, fuel, ignition, pressure and consumption gauges, heat valve settings and how to avoid stalling the locomotive.
Frostrail enemies: Revenant aggro, the charge when shot, group sizes, melee and zip gun counters, and which enemy types are still unconfirmed.
Frostrail FAQ: release date, price, co-op player count, crossplay, platforms, demo length, saving, languages and the Barotrauma comparison.
Frostrail release date: Early Access lands in Q4 2026 with no exact day or price. Confirmed timeline, launch features and what is still unknown.
Frostrail resources: metal, wood and textile scraps, sorting table conversions, the best fuel and farming routes that respect the 40 weight cap.
Frostrail survival: warmth versus health, sealing a heated room, fuel choices, food, bandages, cold damage and the 40 weight Overcumbered cap.
Frostrail system requirements from Steam: Windows 10 64-bit, 16 GB RAM and RTX 3060 minimum, 32 GB and RTX 4060 recommended, 25 GB storage.
Frostrail weapons: primitive club, metal hammer, crowbar and zip gun, ammo economy, reload discipline and why no demo damage numbers exist.