I suggest changing the default Itch.io game resolution and enabling the fullscreen button. Besides that, the game gives no directions, controls or context, which make it very hard to figure what to do.
Viewing post in Cleanse The World jam comments
Yeah, I'm sorry for the inconveniences caused, I was too focused on fixing some bugs and modelling some models, plus had to sleep earlier(that time is around May 14th 11pm, submission time for me in GMT+8 is 15th 6am), so I submitted a bit rushed.
I've put the instructions at my game page's descriptions now, and thanks for the feedback!