Ultimately, Mushroom Men is one of those games that's interesting for its experiments and noticing the problems that come from its omissions. The low difficulty and strange aesthetic could make it a good buy for a young gamer or someone who just enjoys the platforming genre. In general though, the game's opening summarizes it up nicely. There's a lot of really cool art while a narrator explains that your village was destroyed by evil mushrooms and you've been wandering around ever since.
The huge amounts of emotion and empathy that people could be experiencing are instead shown only through the art and music. That's pretty much how the rest of the game works. There are a couple of things to like about Mushroom Men, but not enough to justify buying it before it's in the bargain bins.