Probably best described as an interactive story puzzle game Catherine certainly won't be appeal to everyone but it there is certainly nothing else quite like it.
The main bulk of the gameplay, the puzzle element, involves climbing a set of blocks in order to reach the top before the blocks below you fall or, as is the case on some occasions, a nightmarish creature kills you. As the game progresses further complications, such as slippery ice blocks, are added to up the challenge making the game fairly difficult on anything above the easiest setting.
In between these block climbing puzzles the game tells the story of Vincent, a man in a serious relationship with a woman named Katherine, that finds himself waking up every morning with the seductive Catherine in his bed and no idea how she got there. Depending on the decisions made by the player when asked questions after each puzzle section or when talking to patrons of the Stray Sheep Bar, which acts as a kind of game hub, each cut scene (and the story as a whole) plays out differently. Just how these two separate elements are linked is integral to the story and so I wont spoil it here.
As I said at the start of this review this is not a game that will appeal to the masses but anyone looking for something a little bit out of the ordinary could do a lot worse than give Catherine a try.