Spewer is nice, it reminds a bit of Kirby. You are a little guinea pig that jumps through the dangerous levels. You control it with "W,A,S,D" and can use the "left mouse button" to "puke?" or secrete mucus, that will help you advance in the level. A total of 60 levels are waiting for you. Switch and jump around wildly, a real challenge. If you get stuck sometimes press "R" to reset when needed, especially in Chapter 2 because I didn't plan such a stupid pill to work properly. The foam gives a kind of a weird effect on the physics.