The tense atmosphere created whilst playing is an atmosphere very little games ever achieve. Coupling its upbeat music that contrats with its bleak colouring and and environment, it all really helps put the player on edge.
The use of items to help aid in winning keeps each playthrough and run of the game unique and fun, knowing that each encounter with the dealer means you'll always face different arsenals of tools that can reverse tide on each side.
I would give it five stars, but unfortunately the AI can be a little retarded. Of course you don't want an AI that just wins all the time, scanning the content of the reciever, but for a game all about chance, it tends to feel more in the players favour than the dealer.