Tenchu: Dark Secret is a third-person action game with a mixture of stealth and fighting games from the developers of Polygon Magic, Inc.. The game is published by FromSoftware, Inc.. Tenchu : Dark Secret is also known as Tenchu: Dark Shadow. Perhaps Tenchu: Dark Secret is being developed for PC, but this version has not yet been announced. Overall, the project turned out to be rather weak. Most reviewers gave the game very low ratings.