A lot of fun! I enjoy the subtle coloring and changing background texture.

It's a bit confusing at first to grasp that one upgrade is applied randomly at the start of the game (I think?). The first few times I played it felt like the rules were changing and I couldn't figure out what contributes to the score multiplier.

Also, when you get multiple upgrades, the text reads something like "You caught 0 coins out of 0 in 0 seconds (+1 upgrade and choice). You missed 0 times (+1 upgrade and choice)." which is a bit confusing.