There will be more data and proper atribution here (original author, steam link, original post date, etc) real soon, I promise. This is just like a technical test to see if they're coming in ok at all.
Crocogame » Patch 1.0.2 (Small fix)
Essence chests are balanced to spawn more often on higher difficulties where the player has more available essence slots. Despite that, the essence chest spawn chance on low difficulties was quite low.
Small fix: slightly boosted the chance to spawn essence chests on lower difficulties