"Click" on your friends' construction sites to earn yourself experience points!
You may "click" on your friends' construction sites once per day.
Each "click" will earn you +10 experience points(xp)!
Different constructions require a different number of "clicks" to complete them, so check everyday to see if you can earn more xp.
When a construction has enough "clicks", your friend will have a new building, all thanks to your help.