Super fun concept! I like the idea of having to optimize inventory space! The concept is really fun and I think there's a lot of potential and the upgrades stacking I love too. I think some more balancing needs to be made in the game! The upgrades get out of control really quickly and I reach the cap in like 5-10 minutes of playtime when I wanted to play for longer!
I like the artstyle a lot as well! The score calculation is actually really satisfying to look at and the effects are there! Again a lot of polishing and I like the theme but some balancing needs to be done since it makes the game quite short! So much potential with this idea, good work!