A collection class reflects how difficult it is to get a collection item.
In total, there are 3 collection classes:
- Items from green-class collections can be obtained any time you explore a location;
- Items from blue-class collections can be obtained when exploring a location where Text, Silhouette, or Match mode is active;
- Items from purple-class collections can be obtained when exploring a location with any anomaly active.
The higher the collection class, the bigger the reward you get for assembling it.