Disturbing Video Game Music 8: Mysterious Life Form - Pikmin 3

Pikmin 3's final level, the Formidable Oak, is legit one of the most stressful and frightening levels in ANY video game. Without giving too much away, it's all because of the Mysterious Life Form, an invincible diabolical blob who chases you throughout the entire level. Its theme music as it does this is doesn't help matters at hall and manages to outcreep the infamous Submerged Castle from Pikmin 2.