This is a really cute little toy. Not much of a game, as there is too little diversity in game levels and game play experience, but I like the sound and visual effects. I can really feel the fungal “infection” I am playing as. The game could use some random events or an antagonist NPC (probably some guy with a fungicide) or another competing player to be more interesting and more of a game.
There is one design oddity / possible bug - buying another decrease in a number of clicks needed to spread doesn’t make much sense after that number gets to 1; yet the option is available and can be bought.