Factory Upgrades

Factories can be upgraded twice: Once when they reach a total of 1000 units of goods produced, and once when they reach a total of 3500 units of goods produced.

Each factory type has two upgrades available to them, and there exists three different types of upgrades:

* Upgrade of efficiency (+20)
* Upgrade of base production (+50%)
* Upgrade of maximum number of workers (+1)

This is the list of what upgrades the different factory types have available to them:

## By Level

### Level One

* Cotton field: Base production increase, 4th worker
* Fishing fleet: 4th worker, base production increase
* Forest: Efficiency increase, base production increase
* Oil drill: Base production increase, 4th worker
* Pig farm: Efficiency increase, 4th worker
* Quarry: Efficiency increase, 4th worker
* Wheat field: Base production increase, efficiency

### Level Two

* Brewery: Base production increase, 4th worker
* Cotton mill: Base production increase, efficiency increase
* Flour mill: Efficiency increase, 4th worker
* Harbor: Base production increase, 4th worker
* Paper factory: Efficiency increase, 4th worker
* Plastic industry: Base production increase, efficiency increase
* Refinery: Efficiency increase, 4th worker
* Sawmill: Base production increase, 4th worker
* Slaughterhouse: Base production increase, efficiency
* Stone chopping house: Base production increase, 4th worker

### Level Three

* Bakery: Efficiency increase, 4th worker
* Carpentry: Base production increase, efficiency increase
* Newspaper printing house: Efficiency increase, 4th worker
* Tailor workshop: Efficiency increase, base production increase
* Toy factory: Base production increase, 4th worker

## By Speciality

### Wood

* Carpentry: Base production increase, efficiency increase
* Forest: Efficiency increase, base production increase
* Newspaper printing house: Efficiency increase, 4th worker
* Paper factory: Efficiency increase, 4th worker
* Sawmill: Base production increase, 4th worker

### Fish

* Fishing fleet: 4th worker, base production increase
* Harbor: Base production increase, 4th worker

### Stone

* Quarry: Efficiency increase, 4th worker
* Stone chopping house: Base production increase, 4th worker

### Wheat

* Bakery: Efficiency increase, 4th worker
* Brewery: Base production increase, 4th worker
* Flour mill: Efficiency increase, 4th worker
* Wheat field: Base production increase, Efficiency increase

### Pigs

* Pig farm: Efficiency increase, 4th worker
* Slaughterhouse: Base production increase, Efficiency increase

### Oil

* Oil drill: Base production increase, 4th worker
* Plastic industry: Base production increase, efficiency increase
* Refinery: Efficiency increase, 4th worker
* Toy factory: Base production increase, 4th worker

### Cotton

* Cotton field: Base production increase, 4th worker
* Cotton mill: Increase production, efficiency increase
* Tailor workshop: Efficiency increase, base production increase

## By Upgrade Type

### Upgrade of efficiency

* Bakery: Efficiency increase, 4th worker
* Carpentry: Base production increase, efficiency increase
* Cotton mill: Base production increase, efficiency increase
* Flour mill: Efficiency increase, 4th worker
* Forest: Efficiency increase, base production increase
* Newspaper printing house: Efficiency increase, 4th worker
* Paper factory: Efficiency increase, 4th worker
* Pig farm: Efficiency increase, 4th worker
* Plastic industry: Base production increase, efficiency increase
* Quarry: Efficiency increase, 4th worker
* Refinery: Efficiency increase, 4th worker
* Slaughterhouse: Base production increase, Efficiency increase
* Tailor workshop: Efficiency increase, base production increase
* Wheat field: Base production increase, Efficiency increase

Please note the efficiency will be effected by upgrades.

The game does a calculation each day based on the previous day's efficiency. The actual formula used is:
new efficiency = previous efficiency - (building age \* 0.0002 \* base efficiency)
When you do an efficiency upgrade, both the current and base efficiency are bumped up by 20 percentage points.

### Upgrade of base production

For clarification the increase in base production is :

50% increase of the base production, rounded down.

Example: Fishing fleets have base production of 37 to 66. The upgrade adds 18 to 33 for a total of 55 to 99.

* Brewery: Base production increase, 4th worker
* Carpentry: Base production increase, efficiency increase
* Cotton field: Base production increase, 4th worker
* Cotton mill: Base production increase, efficiency increase
* Fishing fleet: 4th worker, base production increase
* Forest: Efficiency increase, base production increase
* Harbor: Base production increase, 4th worker
* Oil drill: Base production increase, 4th worker
* Plastic industry: Base production increase, efficiency increase
* Sawmill: Base production increase, 4th worker
* Slaughterhouse: Base production increase, efficiency
* Stone chopping house: Base production increase, 4th worker
* Tailor workshop: Efficiency increase, base production increase
* Toy factory: Base production increase, 4th worker
* Wheat field: Base production increase, efficiency

### Upgrade of maximum number of workers

* Bakery: Efficiency increase, 4th worker
* Brewery: Base production increase, 4th worker
* Cotton field: Base production increase, 4th worker
* Fishing fleet: 4th worker, base production increase
* Flour mill: Efficiency increase, 4th worker
* Harbor: Base production increase, 4th worker
* Newspaper printing house: Efficiency increase, 4th worker
* Oil drill: Base production increase, 4th worker
* Paper factory: Efficiency increase, 4th worker
* Pig farm: Efficiency increase, 4th worker
* Quarry: Efficiency increase, 4th worker
* Refinery: Efficiency increase, 4th worker
* Sawmill: Base production increase, 4th worker
* Stone chopping house: Base production increase, 4th worker
* Toy factory: Base production increase, 4th worker

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