## HOW THEY WORK

The Mass and Energy values displayed in your interface are really decimal numbers, but they are displayed with the values floored to the nearest whole number. For instance, an interceptor that costs 0.975 mass per second will be displayed as costing 0 mass per second.

When economic production structures are built next to structures that use their resources, they provide an “adjacency bonus”: that structure uses less of those resources. For instance, the factory building that interceptor will use less mass per second to make it if it is built next to mass extractors or mass fabricators, and it will use less energy per second if it is built next to power generators.

Similarly, mass and energy storage buildings provide adjacency bonuses to economic production structures. For instance, mass storage buildings placed next to a mass extractor will actually increase the extractor’s output.

The adjacency bonus is percentage-based and goes by the percentage of the building that is surrounded by bonus-granting buildings. For instance, a T1 power generator will grant a certain adjacency bonus to a factory if all sides of the factory are covered with T1 power generators, and 50% of that adjacency bonus if two sides of the factory are covered with T1 power generators.

You can tell an adjacency bonus is working when a small red line appears between the two buildings. For this to occur, at least 1/2 of the building’s sides must touch each other. (You can’t put a T3 power generator touching one square of a mass extractor and expect it to grant a bonus to the mass extractor’s energy use.)

Adjacency bonuses are still in effect even when the bonus-granting buildings are turned off. (This means you can turn off your fabricators and they will still make adjacent buildings more effective.)

Finally, although not an “adjacency bonus”, rebuilding a structure on its own wreckage will reduce the cost of the structure by 50%.

### THE NUMBERS

Remember that all mass producers are also power consumers.

More complete data for non-maximum bonuses can be found in each unit’s section.

All sides have identical adjacency bonuses.

Tech 1 Power Generator

Maximum bonus: 25% less energy spent

Works with: Any power consumer

Hydrocarbon Power Plant

Maximum bonus: 50% less energy spent

Gives bonus to: Any power consumer

Tech 2 Power Generator

Maximum bonus: 50% less energy spent

Gives bonus to: Any power consumer

Tech 3 Power Generator

Maximum bonus: 75% less energy spent

Gives bonus to: Any power consumer

Tech 1 Mass Storage

Maximum bonus: 50% more production

Gives bonus to: Any mass producer

Tech 1 Energy Storage

Maximum bonus: 50% more production

Gives bonus to: Any energy producer

Tech 1 Mass Fabricator

Maximum bonus: 10% less mass spent

Gives bonus to: Any mass consumer

Tech 1 Mass Extractor

Bonus: 2.5% for one extractor

Gives bonus to: Any mass consumer

Tech 2 Mass Extractor

Bonus: 3.75% for one extractor

Gives bonus to: Any mass consumer

Tech 3 Mass Extractor

Bonus: 5% for one extractor

Gives bonus to: Any mass consumer

Tech 3 Mass Fabricator

Bonus: 1.25% for one fabricator

Gives bonus to: Any mass consumer