I like the concept of the game (having a fungus take over and destroy the world by spreading it spores everywhere) and I think its execution is great. I like the art changing over time depending on your progress because its clear to see that your actions are doing something. Likewise, the music matches the  menacing tone. The only thing I would say to improve is maybe the final few upgrades are a bit of a slog to get so maybe reduce them a bit.

decent game, i like the sound effects and music

The idea of growing a fungus to consume the world is a great idea and being able to see your progress is even better. Having an auto clicker and an increased click size are great features. The art for the backgrounds is really good and having an ending of destroying the world is a nice edition. I would like to see more upgrades and maybe an expanded scope to destroy all matter or something but really good overall