It was very frustrating that you basically have to farm certain ingredients in order to progress. Especially annoying when you /need/ a particular potion (eg a science potion) then have to leave, find a place that has ingredient x (I was always running out of blazestone), make potion z, then fight all the way back to where you were. And why is there so much heartfruit everywhere? Does anyone use it that much?
In a world without the first law of thermodynamics:
Energy Creator
Wires: A7-A12, A12-J12, J6-7, J7-K7, J9-12, L6-7, L9-11
Power: J6
Pusher L6 (facing right)
Puller J9
Light bulb L11
Solar Panel J11
Helibot A7
Wireless senders: J-k7
Receiver L7
 "Shonen Idle Z"){kind=icon}
 "Kana Warrior / かなウォリアー"){kind=icon}
 "Multishop Tycoon"){kind=icon}
 "Zos"){kind=icon}
 "Electric Box 2"){kind=icon}