Hey there! I found your game to be really fun and sweet, but I did find a bug which, ultimately allowed me to win-.
Here's the screenshot, at first was by accident, I buyed a gloomshroom, replaced it with a brown shroom, and then it started producing a megaton of resources super fast lol. I then realized what I just did, and decided to replicate it in reverse, placing a brown shroom, remove it, and place a yellow one, and it did the same.
There's also a small bug where you can just open the menu at the "thank you for playing" screen, but it's irrelevant to the gameplay, so I think it's just good to be mentioned.
Otherwise, lovely little game, really enjoyed it.