Invertio

Originally inspired by Touhou Project's Seija Kijin, who has a screen-flipping attack in a shoot-em-up which I'm sure has never caused anyone to rage-quit Touhou 14. Unfortunately, screen flipping isn't all she's going to do to you here...

The base gameplay is fairly standard tile matching, but your actual objectives may change from level to level and complications will quickly begin compounding. Hopefully you can clear everything before Reimu has some kind of stress aneurysm.