It is a cool concept, however the hitboxes on some mushrooms were incredibly inconsistent. Sometimes when I landed on the mushroom, it flung me in a random direction at full speed. It also felt really bad when I hit the edge of a mushroom that is close to the water, since the jump sound effect played at the same time as I died. So I knew I made the jump but still ended up dead. With better controls, I could see this being pretty fun.