Slime Rancher is a first-person farming adventure game from Monomi Park, first released in 2017, in which players explore the Far, Far Range and collect bouncy, gelatinous slimes. The slimes communicate with short squeaks, chirps and warbles, and clips of those vocalisations have long been shared by fans on soundboards and in gameplay videos. This particular wooo is valued because it is instantly recognisable to players, even out of context, and it carries the game's light, cheerful tone into edits, streams and memes without needing any explanation.