Into the era of accessible games, Demon's Souls charges like an armored knight facing down a horde of ghouls. It relies on conventions that game design was supposed to have abandoned long ago, and unabashedly rejects the casual player. But it's unfair to peg it as a brutal slog designed for old-schoolers. Though the plot is inscrutable high-fantasy stuff, the game world's central premise is inventive. Play as a lone warrior from among 10 different classes hunting demons to attain their souls, the world's currency.