Parents need to know that "The Witness" is a downloadable first-person exploration game set on an island full of hundreds of maze puzzles. There's no violence, sexuality, language, or mature themes of any kind, though a few lines of text reference alcohol in terms of metaphor. Themes within the largely abstract narrative include perspective - in both the physical and figurative senses - and perception, challenging players to consider how they think, how they learn, and how they know what they know. These themes encourage players to be both analytical and critical of the world around them. Parents should also note that this is an extremely difficult game with no instructions, and that it could prove frustrating to less patient temperaments. Players are intended to work out everything, from the first puzzle to the last, on their own without a single hint or even a word of explanation.