A less-known title among the SSI RPG's, but nonetheless one of the best. And that's saying a lot.
The story takes place in the western parts of the Forgotten Realms. You have to prevent the armies of an aggressive kingdom from assaulting your homeland.
Text adventure freaks - hands off it! It is a Role Playing Game, and it helps a great deal to know your AD&D math, and some background of the Forgotten Realms as well.
No real parser, since it's a Role Playing Game. A few multiple choice entries here and there.
Fantastic storyline, with many opulent descriptions. Several side quests that don't have to do with the story immediately, but add to the game nonetheless.
A lot of challenging battles, but none as unfair that it gets frustrating, as far as I remember. Most of the time you can control the order of events yourself, so you can save the harder places for times when you're stronger.
Read "mazes" instead of puzzles here. Lots of places to map and explore - with pen and paper. Automapping hadn't been invented at that time. To me, that makes it especially charming.
Well-balanced RPG. Often hard, never cruel. Rich story.