Yoshi's Adventure 128: Attack of the Factory

After losing Bowser in an attempt to stop him from his monthly chores, Yoshi has realized that his base has polluted one of the valleys it inhabited. Oil leaked out and is pouring down into Oil Valley! Yoshi must... stop it to finally defeat Bowser for that cheap cliffhanger! And also there's music at the final boss where Bowser is. Yay!