Well, this is a classic. The first of the Gold Box games, and must say it shines. Not that it is perfect, but as a start it surely is great. Leaving you in charge of a team of adventures who must get rid of all the bad guys, it looks like a great way to adapt D&D into computer.
I never was too fond of D&D, and this is based on the old Advanced D&D rules, so I can't tell how good of an adaptation it is, but I suppose they did it well. Actually all the game is quite polished, except for a few bugs, like the charm bug that transforms your characters into NPCs.
But apart from it, it's all great. Things like how the battlefield is created dynamically from what surrounds you on the exploration view, or how the combat works, including opportunity (free) attacks against things such as fleeing.
It's all very complete. Even if the game may be a mismash of features from other games from it's time, or maybe due to that, this is an original and great game. As long as you don't mind all the combats.
Because this is, after all, an adaptation of D&D. So the game is action oriented, there is a bit of plot, which is nothing not seen before, and a bit of encounters, dialogs and such that gives a nice mood to the game, but nothing far from a light adventure tone, but the meat of the game is in the combat, and you will get lots.
Sometimes it will be uneven, others you will get hordes of weak enemies, and always there is a bit of an strategic element, not too much I would say, that will let you win any situation. But they rarely get tedious, except for the nuisance of random battles on the world map.
Yes, there is a world map. After half or so of the game you can get outside the city and explore. But that's not as fun as the city itself, it's just a way to get to some sidequests, including the awful wizard isle, with that labyrinth of teleporters that I beat with a mix of several attemps, luck and then the cluebook.
I know that this kind of dungeon is the trademark of D&D, but it's too much, unless you expend some days mapping it, and then take a look at how the teleporters work, and then map them again (which is way too much time and work) I don't know how are you expected to beat that maze.
Well, it's the typical late-game filler dungeon after all, but it's still a sloppy design. And talking about design, I have the feeling the game was made with selling extras in mind. You see, the exact info about each spell is not on the manual or the journal, but on the cluebook, and the details of what is going on, that sometimes the game seems to expect you to know, are on a module published apart from the game.
So, you want to have all the info? Buy the extras.
Anyway, the game itself is quite fun. May need some improvements, but as long as you look for a fun action RPG, on a place filled with monsters that have some personality (lots of little descriptions and small dialogues everywhere make the encounters less clonic), you must try this one.