By playing different PA DApps (such as Castle Defense, Ice Pop , Bricks n Targets), you can earn XP. The XPs can be exchanged into POC soon. We are working to make this function live by end of Aug. That means that your PA Wallet based on Hyperledger Fabric will go live by then and you can exchange your earned XP to POC. The exchange rate between XP and POC may vary from time to time. Early gamer will enjoy better rate of XP due to the limited supply of POC. Please stay tuned with us.