Why Factory Stacking Matters

Openfront stacking factories matters because owning more factories raises the expected number of trains across your network. Each individual factory becomes less likely to spawn a train, but the combined network chance increases as factories are added. That makes factory count, connections, and station ownership important parts of earning Gold.

Factories are economic buildings built on land. They automatically create trains and railroads when connectable buildings are placed within range. A connected Factory, Port, or City can form part of the rail system, but only Port and City stations pay Gold when trains arrive.

The useful question is not simply whether a Factory can connect. It is whether the resulting network includes stations that pay Gold and whether their ownership relationship produces a reward. A Factory-only connection can support the network, while Ports and Cities are the destinations that generate the listed station reward.

Factory Connections and Placement

Factories connect with three building types: other Factories, Ports, and Cities. When two or more connectable buildings are placed within range on land, factories automatically spawn trains and railroads.

| Connectable building | Can connect with Factory | Pays Gold as a train station | |---|---:|---:| | Factory | Yes | No | | Port | Yes | Yes | | City | Yes | Yes |

Railroads currently travel only directly in cardinal directions. This limits a connection to straight north, south, east, or west travel rather than diagonal routes.

The source gives two distance limits for factory connections:

| Connection rule | Distance | |---|---:| | Range in which a Factory and another building can connect | Between 15 and 100 units | | Maximum distance for an individual railroad connection | 120 units |

A Factory is an economic building, and economic buildings are round-shaped and land-only. Ports are also economic buildings, but they have their own placement requirement: they must be built near water.

When setting up a connected system, keep these source-supported points in mind:

  • Factories, Ports, and Cities are the only listed connectable buildings.
  • A network needs two or more connectable buildings within range before the automatic train and railroad behavior applies.
  • Ports and Cities are the stations that pay Gold.
  • Railroad travel is limited to cardinal directions.
  • The Factory itself does not pay a station reward.

Train Spawning When You Own More Factories

The main tradeoff in openfront stacking factories is built into train spawning. The chance for each individual Factory to spawn a train on every tick decreases as the number of factories you own rises.

The source gives the individual Factory spawning formula as:

[ \text{spawn chance} = \frac{1}{(\text{numFactories}+10)\times20} ]

The expected overall spawn chance across the player’s Factory network is:

[ \text{expected overall spawn chance} = \frac{\text{numFactories}}{(\text{numFactories}+10)\times20} ]

The second formula shows why more factories can still improve the network’s total expected train activity. The numerator rises with the number of factories, even though the individual Factory chance falls.

| Number of factories owned | Individual factory spawn chance | Expected overall spawn chance | |---:|---:|---:| | 1 | 1 / 220 | 1 / 220 | | 2 | 1 / 240 | 2 / 240 | | 3 | 1 / 260 | 3 / 260 | | 10 | 1 / 400 | 10 / 400 |

These rows apply the source formulas directly. They do not indicate a guaranteed train count or a guaranteed Gold amount. They show the listed probability relationship: individual spawning becomes less likely per Factory, while the overall expected chance grows with more owned factories.

This distinction is important when evaluating a larger Factory network. Adding a Factory does not mean that every existing Factory will produce trains more often. Instead, the owner gains another possible source within a network whose total expected spawning rises.

Factories automatically spawn or connect to trains and railroads to trade with other buildings. Once connected, trains start spawning. The value of that activity depends on the stations a train can visit and the relationship between the train owner and the owner of the territory containing the station building.

Gold Rewards From Connected Stations

A train provides a Gold reward when it reaches a station that pays Gold. The reward goes to both the station owner and the train owner, unless one player owns both. In that self-owned case, the reward is received once.

The reward depends on the relationship between the train owner and the owner of the territory where the station’s building stands.

| Relationship | Gold reward | |---|---:| | Allies | 50,000 | | Neutral / Teammates | 25,000 | | Self | 10,000 | | Enemies / Embargoed | 0 |

This table is about the relationship involving the train owner and the owner of the territory containing the train station’s building. It is not based solely on who placed the Factory.

A City or Port station can therefore matter differently depending on territory ownership and relations. Allied stations have the highest listed reward, while enemy or embargoed stations provide no Gold reward. Neutral and teammate stations have the same listed reward category.

Factories and Ports share the same escalating pricing structure. The source lists the prices below.

| Purchase | Factory price | Port price | |---|---:|---:| | First | 125,000 | 125,000 | | Second | 250,000 | 250,000 | | Third | 500,000 | 500,000 | | After | 1,000,000 | 1,000,000 |

Because Factory and Port pricing is shared, adding either one affects the same price progression. Cities have the same listed first, second, third, and later prices, although the source separately identifies Factory and Port as sharing pricing.

A Factory network’s Gold results are therefore tied to several documented conditions:

  • The Factory must be part of a connection involving eligible buildings.
  • Trains must reach a Port or City station, since Factories do not pay station Gold.
  • The station must be in territory with a relationship that has a positive listed reward.
  • If one player owns both the train and station, the self reward is received once.

Building a Connected Economic Network

Factories are one part of the game’s economic building category. Cities increase maximum Population by 25,000 and are used to gain more workers and troops. Ports spawn trading ships, are necessary to build Warships, and trade ships earn more Gold the farther they travel from their ports.

For the railroad system, their shared role is narrower and clearer: Cities and Ports can serve as connectable stations that pay Gold, while Factories create the train-and-railroad behavior when qualifying buildings are placed within range.

| Building | Building category | Land or sea | Factory-network role | |---|---|---|---| | Factory | Economic Building | Land | Spawns or connects trains and railroads | | City | Economic Building | Land | Connectable station that pays Gold | | Port | Economic Building | Land | Connectable station that pays Gold |

The Buildings source describes buildings as items built on individual pixels on game maps. Players can select a building with number keys or use Ctrl+left-click on the map. Some buildings have specific restrictions, including the requirement that Ports be near water.

For a player considering more factories, the documented network priorities are straightforward:

  • Use only land positions for Factory placement.
  • Keep connectable buildings within the stated connection range.
  • Account for the cardinal-direction railroad limitation.
  • Include Ports or Cities if the goal is station Gold rewards.
  • Consider relationship-based reward outcomes before relying on a station.
  • Remember that Factory count changes the train-spawn probability formulas.

The game code also tracks wagon counts, cargo loading, and locomotive location. However, the Factory source states that there is no known gameplay usage for this data as of its writing. It should not be treated as an established Factory income mechanic.

FAQ

What does openfront stacking factories do?

Openfront stacking factories increases the expected overall chance of train spawning in a player’s network. At the same time, each individual Factory has a lower chance to spawn a train as the number of owned factories rises.

Do Factories pay Gold when a train arrives?

No. Factories can connect to the railroad network, but only Port and City train stations pay Gold.

Can railroads connect diagonally?

No. Railroads can currently travel directly only in cardinal directions.

How much Gold can a train station reward?

The listed reward is 50,000 for allies, 25,000 for neutral players or teammates, 10,000 for self, and 0 for enemies or embargoed players.

Who receives the station reward?

Both the station owner and train owner receive the reward. If a single player owns both, that player receives the reward once.