This is a Roguelike RPG with more plot focus. As with other Roguelike games map squares are represented by Ascii symbols (e.g. r for rat), and you are not permitted to revert to previously saved games.
The games is closed source, but is a free (as in beer) download. The game is available for a number of platforms, however the Linux version is plagued with difficulties relating to loading and saving games, particularly if the game is loaded in a different virtual terminal than it was saved in.