It's out on both XBLA and PSN. I haven't seen anything this creative in ages. The early 20th-century style and of course the stackable dolls make it oddly memorable. You stack into dolls that are one size larger than you, and then you basically possess your target, and its one unique ability. It can then stack into the next-size doll, etc. Of course, you can unstack at any time too. The mechanics couldn't be simpler. Sneak up behind, wait for the target to turn blue, then press a button. The world is fairly open, and you can experiment to your heart's content. I think it's a winner, and I will probably buy it at some point.
Giantbomb review