The reason why I rented this game was because Demon's Souls has fantastic reviews and has received critical acclaim from several sites and magazines.
However, I am a casual gamer and without the ability to pause, save or respawn where I died, it frustrated the heck out of me. I played for less than an hour and immediately repackaged it and mailed it back.
I won't taint the rating with a low score because it's not the games fault that I didn't enjoy it.
If you are prepared to sink some SERIOUS time into this game, without interruption, while enduring redundancy... then you should pick up this game. Most people love it. I didn't.
I am one of the gamers that only played this game for a short period of time. It is very difficult. I often get upset at games that are too easy, but this game is just too difficult ALL of the time. There is no real buffer for getting out of situations, and it is more frustrating than fun. Other than that, I did put 12 hours into the game and it was interesting and unique. I recommend for hardcore gamers that want an adventure and a challenge.