Here’s a thread dedicated to feedback and data collection on rewarded ads.
Rewarded ads are a feature only available on Android and iOS devices. Through it, players can watch a 30-second advertisement every 8 hours (via a button on the left side of the home screen) to receive a random reward.
Here are the possible rewards. This pool only applies for players leveled 500 or higher, lower level players will experience different odds.
I added it to the pile of 544k shards I already had
They’re alright. I’ll probably watch them when I see one available, not for the rewards though. If you’re just starting out though, the rewards might be a nice little extra income.