I had a blast playing your game! The art style is wonderfully quirky and unique, with the flipping of sprites and the overall feel of everything being made from paper adding a lot of charm. The central mechanic is incredibly creative and refreshing, and it truly makes the game feel distinct.
The controls are responsive, smooth, and give a great sense of satisfaction while playing. I also really enjoyed the progression system, with interesting upgrades and meaningful choices to make that kept me engaged.
One thing I would suggest is adding a “confirm” button for the upgrade segment. At times, it felt a little unclear when the segment would end. I deleted a power-up with the intention of replacing it, but the segment ended right after, and I wasn’t able to assign a new power-up to that slot.
Overall, the game is a ton of fun and incredibly addictive! Keep up the great work. I can’t wait to see how it develops further!