In Polygon City, you will be able to upgrade your companies to level 3. To improve a company, you will need to fulfill the requirements that it requires in order to upgrade it.
For example: To upgrade the company Software Inc. to level 2 you need to have purchased the Hardware Store company and to upgrade to level 3 you need the Hardware Store to be upgraded to level 2.
To upgrade your business, you will not be charged any extra fees.
All entire amount received for upgrade companies will be return to the reward pool.