If you like roguelikes - rogue, nethack, slash'em, stone soup, or even things that are similar-to-but-not-quite-roguelike - such as dark souls, rogue legacy, DiD playthroughs of games like skyrim, etc.. then this is almost a must have.

Fantasy, turn based, w/the key roguelike elements of permadeath (no re-loading to your last save if you die, have to re-roll a new character and start over from scratch instead) and great difficulty (but not insurmountable). Through your many deaths, however (and there will be many) - you will learn how to survive to the deeper reaches of the game.

Great unique classes too. Many of which are unlike any I have seen in any other game. If u just enjoy speccing out characters in rpg's and mmo's then this game will scratch that itch too. Though many of the classes need to be unlocked through achieving things in game in order to play them.

The game has a free version too, so you can try before you buy. Buying makes you like a 'donator' and you get extra features like a class and a game-mode that free players can't get. But you can play for free and still unlock the majority of things.

I'm buying even though I already have the game and have been playing it for years, just because Darkgod and contributors have put so much good work into the game that if anyone deserves some of my game $, they do. So if you're not sure about the game, give the free version a try, then come back and buy it if ya like it.

Purely single player, but has an in game text chat feature so ya can talk to others who are also playing at the moment (if you wish). Lots of helpful people in the chat, and can link things into the chat from your current game.

Has a couple expansions, and in spite of how long its been around it is still being developed and added to even today. Edit - Still true in 2020.

If you're not a patient person, or don't like difficult games, or you need your rpg's to be 3d or real time, then ya might wanna pass. But otherwise, worth checking out. One of my favourite games.