Slenderman's Shadow: Mansion takes the Slender myth and puts it in a creepy mansion. The game remains the same - you must find objects before the Slenderman gets you.
Of all the Shadow games, Slenderman's Shadow: Mansion has probably the best looking environment. The (almost) empty mansion is a good location, and the storm outside adds a lot to the atmosphere. Lightning strikes will really make you jump as you find objects and the tension rises.
Slenderman's Shadow: Mansion is still not up to the original Slender's scary standards, but it does a good job of raising your heartbeat as you find more memories hidden around the mansion.
What will really improve this series of Slenderman games is some gameplay innovation. While the locations maybe better or worse than each other, Slenderman is the same, and the gameplay is the same, offering exactly the same chills each time.
Slenderman's Shadow: Mansion offers more of the same Slender action.