Going off of Clearleaf's comment, I was clicking E and I was able to eat them. Unless me pressing E was only picking them up. Anyways, I enjoyed the movement and music a good amount. I see you asking what could make it more fun and I think I would say maybe a enemy that tries to stop you from getting mushrooms or having a score going on for each mushroom you get so you can try and get a new highscore. Those are two good ideas. Great game though! Also, if you have the time, I'd love to hear what you think of my game!