Is there a "hint system" (e.g. it will place a cat in its proper place) and, if not, can player move on to the next level, or is it required to complete a level to unlock the next one?

And just out of interest, as a person who has played almost all the games of this studio. How small is the word "Very little". One developer? Is this a man or a woman? This question has always haunted me. And I will be very offended if the developer does not answer. I will be so offended that I will not buy this particular game. I'll buy "Find all X" because it's mine, but I won't buy this one. 😛...

i cant find how to turn them and if there not in the demo it might be in the realase

It would be really nice to have clockwise rotation (or an option to choose clockwise/anticlockwise). Anticlockwise does not make the game unplayable by any means but it feels awkward when used to clockwise rotation in inventory management games.

猫移动速度跟不上鼠标移动速度，显得操作滞缓，容易点歪，缺少磁吸补位。