Grain farm

Your villagers need to eat something? Don't worry, you have a building that will keep an eye on their empty bellies. Grain farm is here to produce the precious food which is used for constructing buildings, recruiting units, upkeeping your army and research various technologies. Luckly, you have a talented farmers to satisfy all of these needs.
 * Radiant villages have Grain farm, while Dire villages have Pig farm. The only difference is in their name, while everything else is completely the same (food gain, upgrade cost, etc.)

Requirements Is required for
 * This building is available from the start.
 * Not defined

Main statistics
Food is defined as a basic resource. Food is used for various things - upgrading buildings, recruiting and upkeeping your units and so on, so it's important to have a decent food gain per hour. In order to balance out the huge needs for food, Farm grains are pretty cheap and cost almost no stone and food.

Tips & tricks
 * The main resource used for upgrading your Grain farms is lumber, so make sure to have a stable supply of lumber. Once you do, you will be able to upgrade several levels of Grain farm at once.

Upgrades and resource gain
The most important resource to upgrade your Grain farm is lumber.

Cost per level upgrade
Cost = Base cost x 1.2 (Grain farm level - 1)

(Base cost is 105 lumber, 20 stone and 10 food)

Resource production
Production = Acceleration x 55 x Grain farm level x 1.1 Grain farm level
 * PPH - Production Per Hour
 * PPD - Production Per Day