Credits

Credits are a premium currency that lets you buy boosts, additional autos, start clans, and upgrade clan buildings.

There are two types of credits, Bound and Unbound.

Bound Credits
These are the same as unbound credits, except you can only use them on personal character development. That includes boosts and autos.

Unbound credits always get used first over bound credits when purchasing personal improvements.

You can earn bound credits via Action Bonus. They start with a drop rate of X/1000 where X is your current Action Bonus. As you earn Bound Credits, the drop rate decreases. This drop rate resets monthly.

At high Action Bonus, you will be able to receive multiple Bound Credits per Action Bonus, as well as guaranteed Bound Credits per Action Bonus. As your drop rate decreases over the course of the month, so will your chance at guaranteed Bound Credits.

Credits
Also known as 'Unbound Credits', these are the version of the premium currency that can be used on anything, specifically clan buildings (as Bound Credits cannot be used on clan buildings). These can be purchased in-game at the Premium tab.