Why aren't more games like this?

User Rating: 9.5 | Demon's Souls PS3
I bought my PS3 to play this game. I bought it only a couple of weeks after it was released in North America. At the store, when I asked the for title, the clerk said "used or new?"

"You already have a used copy?" I asked.

"Yeah. Somebody brought it back because it was too hard," he said.

I was hooked before I started playing.

Demon's Souls forces hard choices about how to spend your souls. It exacts harsh punishments for mistakes. Combat is fluid and complex - you get better with each battle and it shows. There are really scary monsters; the scariest are human invaders. Camraderie with co-op players is silent and almost sacred.

You have to earn every step you take in this game. I raised my arms in triumph after each boss, because they were so hard to beat.

The only drawback is finishing the game. You can keep playing at a higher difficulty (and I certainly do), but there are no more new places to discover. I would love to see a sequel or DLC.

Why aren't more games like this? Uncharted 2 looks cool, but you never fear dying like you do in Demon's Souls.