I really love this game. I just picked it up about a year ago, and got sucked in hard.
I love a lot of the detail to little things: scrolls can burn, potions can shatter, the rat king, pulling piranha out of water kills them, skeletons can't bleed - stuff like that goes a long way in my books. It's all stuff I found out by mucking around and playing.
It's also a tough game. I rarely win, but I find playing it very relaxing despite the fact you die once and you're hooped. It's like building sand castles or something - yeah it might not last, but it's fun seeing what you can do and how far you get.
I also like that it's turn based as everything you do is a small decision and small decision can influence large ones.
All that said, I swear this game is out to get me sometimes. I had 3 blessed anks, fell in a pitfall trap (died), got 360 no scoped by an evil eye immediately after (died) jumped by a Ripper (died) and then fell victim to another trap when my levitation potion ran out...on level 24...