The trailer is quite atmospheric but doesn't give any clue as to the gameplay. It seems to be similar to Tactical Soldier: Undead Rising, but without zombies (I think). This could be a good one. http://www.youtube.com/watch?v=ETrnkNwtZ9k
Learn to use the search function, there is already a thread for this game. http://forums.toucharcade.com/showthread.php?t=71556&highlight=dark
There are zombies and a lot of combat, isometric view and RPG bits. Its actually quite good (Beta Testing)