Using the Octalysis Tool —https://yukaichou.com/octalysis-tool/— is a fantastic way to practice using Octalysis and putting your design mind to the test with gamification examples found in the wild! Thank you to Marco Segatto for applying his gamification knowledge to Fitbit, Nike+, and Zombies Run! as part of his larger research. Try using the tool yourself, here!
Fitbit
Nike+