I created a review game, using Snakes and Ladders. A smartphone or mobile device with a QR-code reader is required. There are 48 integration problems to work on (if you don't like the game). The answers can be obtained by scanning the QR-code.
This one only has one set of cards, all labeled Complex #s.
There are problems involving:
Finding the absolute value of a complex number, arithmetic operations with complex numbers, simplifying radicals (with negative radicands), and solving quadratic equations with complex number solutions.
Since I also use this for my own classes, the links from the QR-codes will remain in place. I am in the process of creating more of these for both my Calculus class as well as my Algebra II class.
If you encounter any problems with the cards, please send me an email! MrsCarlsonCHS(at)gmail.com