Missions are an engaging feature that will keep you wanting more.
Everyday, by fulfilling a set of criteria, you'll complete your missions and reap their rewards.
Missions are unlocked after periods of 24h or by spending 5 gems to unlock them immediately. You can accumulate a total of three missions and you can unlock new missions 10 times per day.
If some missions mention have some overlap, the same task will count for both missions.
Additionally, you can choose to replace a mission by clicking the circling arrow icon on the mission's title. You can change one mission per day for free. Afterwards, it will have a cost of 10 gems. You can replace missions as many times as you'd like.