40. Dark Souls
http://users.zoominternet.net/~tain/100s/dark_souls.png
Everything I liked about Demon's Souls is here (needing to learn stage layouts, enemy ranges, and animation speeds), and it actually manages to be a better game in every way. More limited flasks mostly replace healing items, there's a world that consists of focused areas tied together in an open manner (while maintaining the spaced out checkpoints), the bosses are rougher overall, the online connection methods are divided up in a more interesting way, there's more secret stuff, and probably best of all, there's a constant feeling of uncertainty regarding what one should be doing next. The game still has some of the original's problems (I don't like how much luring and backstabbing goes on, and I'd like to see a game kinda built like this only with absolutely no options for grinding), but I loved it enough to play for 75 hours and counting.
I think it actually lost a tiny bit of magic when more people started going online and leaving hints. I don't know if I'd suggest playing it offline, though, since the invasion/covenant stuff is really neat.

