Sentinel: Descendants in Time is a first-person adventure with a hint of puzzle from developer Detalion. The game is published by The Adventure Company. In some circles, Sentinel: Descendants in Time is also known as Sentinel: Verborgene Existenzen, Sentinel: Straznik Grobowca, Sentinel: Potomci Casu, Sentinel: Descendientes en el Tiempo, Sentinel: Dans l'Antre de la Dormeuse and Realms of Illusion. Overall, the project turned out to be rather weak. Most reviewers gave the game very low ratings.