Having played the demo for a while, I'd like to give my thoughts on it:
The text can be incredibly difficult to read, particularly in the bestiary.
Please consider accessibility issues such as that.
It is absolutely worth sacrificing the '8-bit style' for functionality and clarity.
It also seems as though one must have weapons/armour in the gear wheel to equip them, despite that being where one would want to have useable items.
A dedicated 'equipment' page and/or wheel would be much appreciated, and a tremendous Quality of Life improvement.
Otherwise, the core gameplay definitely appeals.
Collecting and raising creatures mixed with some classic RPG mechanics is a great mix. Just needs that extra care and polishing up in terms of UX/UI.