Pulse is a first-person experiential journey in which you are blind. Using a process similar to echolocation, you use sounds in the environment to create a mental reconstruction of the world around you. The character has not been blind since birth, and is therefore able to pull memories from their childhood to "see" the environment.
Throughout your journey, you will encounter creatures called Mokos whose sole desire is to help you. By using the noise these creatures make, they provide additional "vision" when in need. They also provide superfluous amounts of cuteness. In contrast, there are also terrifying creatures who seek to devour you. Listen carefully and avoid these beasts at all costs.