Each production line has two upgrades Speed and Amount. To complete these upgrades you must find production upgrade cards (blue) in chests.

Production Upgrades are unlocked by leveling up. Each production line upgrade may unlock on a different level.

In addition to these two upgrades, production lines are also affected by their corresponding building upgrades.

Magic provides the production line a chance to produce extra resources each production cycle.

Magic amount upgrades increase the amount of extra resources produced when a production cycle hits magic.

Increases the amount of cash produced when the number of owned items of a production item reaches certain thresholds. For example, owning 10 Plants causes cash to be produced. Owning 100 Plants causes cash to be produced, etc.