Is there any difference between the levels in view of the treasure chest spawn chance?
I know that there is a relic which will raise the chance of a treasure chest by 20% per level. But I have some levels where the treasure chest nearly appears all 5-10 enemies and I have some levels which seem to spawn no treasure chest. Watched it for quite 5 minutes which killed nearly 300 enemies, but no treasure chest at all.
If there is a difference, how can I determine it?