Square Inches

 a limited-time currency for the Superheroes 2016 Event. They used to upgrade the Burns' Summer Mansion. They be obtained by sending specific characters to work at the aforementioned building.

Additionally, they be purchased for 2 Donuts each, but only if the player  to upgrade the Burns' Summer Mansion without enough  to be able to perform the upgrade.

Characters with jobs
The following table shows the characters with earning jobs. All jobs 4 hours. The prize track currency depending on the Issue: Brass Knuckles during Issue 1, Soilant Red during Issue 2 and Crab Juice Cans during Issue 3. Premium characters at double rate compared to their freemium counterparts.

US$