In the Arena, players can team up with other players in the same Guild to compete for rewards. An internet connection (and Game Center account on iOS/OS X) is required to submit scores and receive rewards.
Rewards typically go out within a few hours of an event ending but can take up to 24 hours. If you earned a reward and it has not been delivered after 24 hours of the event end, please Contact Us and provide the support code from the Options menu for further assistance. For iOS/OS X, this code is at the bottom of the Options menu. For Android, tap the blue "i" button in the bottom corner of the Options menu.