Animal Well is an action-adventure game developed by Billy Basso. The game unfolds within a dense, interconnected labyrinth filled with secrets. Players explore this nonlinear world, encountering beautiful and unsettling creatures. The gameplay emphasizes tension and suspense, with players disempowered and relying on clever use of items and the environment to progress. Unconventional upgrades are collected to manipulate the surroundings in surprising ways, and all items possess multiple uses. The structure encourages players to assess what is safe and dangerous, with innocuous details gradually becoming meaningful as the map is filled out by lighting candles. The main game's secrets are said to extend for years beyond initial completion.