I haven't play the actual game but this is a very simple, fun and cool, a nice sequel to the actual game but WHERE IS MY KATANAAAAAA XD, also I notice that pressing e is the same as pressing esc or tab so I end up thinking it crashes in fact it did a couple of time, a download version would also be good, I haven't play the old games like dooms or wolfenstein, but it feels like it so good job :D.