Sanctum CollectionSanctum is first person tower defence game and is set in a beautify science fiction world. You take the role of Skye, an elite soldier sent out to protect her hometown, Elysion One, from hordes of mysterious alien creatures. To facilitate your success you construct defensive structures and upgrade handheld weapons. Jump right into the fray and wreak havoc with your own weapons, and unlike regular tower defences you are a key part of the defence.