The player can change positions to have different perspectives of the world, leaning to see around buildings or standing up and getting an aerial view. Quill communicates with the player through the use of American Sign Language (ASL) for puzzle hints and emotional responses. The player also can manipulate the environment to navigate obstacles and solve puzzles. The player controls Quill, navigating environments and battling enemies.

Unlike most games, Quill is aware of the player. The player is shown in the game as a masked face and orb. Moss is an adventure game viewed from the first-person perspective using the VR (HTC Vive, Oculus Rift, Oculus Quest, PSVR) headset. After Quill's uncle is captured, the reader guides Quill on an adventure to defeat Sarffog and save her uncle. The kingdom where Quill lives has been overthrown by Sarffog, a fire-breathing snake. The reader meets Quill, a young mouse, and begins an adventure.

As they flip through pages, the reader is transported to a fantasy land contained within the book.

While in a library, the reader finds an old book. Ī sequel, Moss: Book II, was announced by Polyarc during Sony's State of Play in 2021, and was released on March 31, 2022. A PlayStation 5 version was released on February 2023. In June, a PC version featuring high-resolution graphics was released. Moss was released for the PlayStation 4 in February 2018. The game is presented from a blend of first-person and third-person perspectives, with a primary focus on solving puzzles. Moss is a virtual reality adventure game developed and published by American video game development studio Polyarc.

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