Extensions

Extensions can be obtained from the shop, the crate, or the blacksmith stations.

At most 3 extensions can be applied to each wagon. Once an extension is added, it can only be removed at the Blacksmith Station and cannot be replaced when adding new extensions.

Some extensions are not compatible with some wagons, and the extension effects may differ depending on the wagon. Please refer to the individual wagons page for details.

All Extensions

Storage-Pull

Moves items from the closest storage wagon to this wagon.

If the wagon can consume both types of resource, the iron is prioritized.

Storage-Push

Moves items to the closest storage wagon.

Front-Pull

Moves items from the front neighbor to this wagon

Can take any resources from either the input stack or the output stack.

Auto-Drop

Drops off produced items close by

Does not start the fuse of dynamite or torpedo.

Magnet-Pick

Picks items very close to the wagon onto the wagon

2m for the first, +1m for each additional extension.

Ghost

Lets you pass to the other side. Not meant figuratively.

Hydrocharge

Increases wagon level by 2, but will require water and can overheat

Wagons with this extension do not heat up if they are not operating. Applying multiple of this extension can cause the wagon to heat up faster. See Water Capacity for details.

Supercharge

Increases wagon level by 1

Range-Extension

Increases wagon range

Range increased depends on the wagon type as well as wagon level. See individual wagon's page for details.

Speed-Boost

Increases wagon speed

Speed increased depends on the wagon type as well as wagon level. See individual wagon's page for details.

Stack-Boost

Increases wagon stack size

Increases both input and output stack sizes if the sizes aren't fixed.

Time-Extension

Increases wagon active time

For wagons that actively consume resources, the fuel consumption rate is lowered.

Key

A shiny key that opens a door with many locks.

One key can be found on each special wagon at every ??? Station.

It has no functionality when added to a wagon. However, you need to collect at least 5 of them to unlock the boss level of the secret biome.

Brakes

Stops the train before it reaches the end of the tracks.

Brakes is the only extension that is applied to the engine. It is obtained on the boss level of the secret biome.

When applied, the train would stop at the final station of UnRailD HQ instead of crashing inside the station.

Since you have no option but to visit UnRailD HQ after the station that you obtains this extension, you cannot play a regular endless level with this extension.

This extension exists in sandbox mode but cannot be applied.

This extension exists in custom mode but has no effect.

Special Extensions

The following extensions are not in endless mode

Wagon Upgrade

A toolbox to upgrade a wagon by one level.)

Can appear in any mode other than endless. Note: the in game item looks like a box of tools rather than a regular extension.

Wagon-Swap

Moves a wagon one slot forward. (This extension will be destroyed after using.)

This extension is Time Attack Mode only.

Extension Compatibility

This table shows a summary of extension compatibilities. Some extensions may behave differently on different wagons. Please see the individual wagon's page for details.

Bridge Wagon