Lovelly!!
I have some suggestions for improvement:
1- Make clearer which upgrades are purchasable, idk if this exists and i struggled because i'm colorblind, but knowing which upgrades i can buy with my money instead of hovering all of them would be nice.
2- Purple triangles are horrible for colorblind people: I know you want a color that its lookalike, but make a colorblind version with red triangles please.
3- I found that most of the upgrades are not so useful, like the money/second and the heat wave ones, maybe making a way for the player to not only rely on the main heat (the mouse) would be cool.
Other than that, i just want more content.
Loved how the purple triangles changed the gameplay! The gameplay was just going back and fourth with the mouse, now i have to be careful for triangles! Thats really cool. For that reason, i would nerf the buff that diminushes the amount of triangles, they're interesting gameplaywise. And more things to change the gameplay would be nice too.
Great game, hope it succeeds