This is a big game. You have a long, opening sequence (very long!) that is entirely linear, then you begin the actual game, which is one of the best RPGs I've seen in text (Kerkerkruip is the other, and they're roughly equal in quality).
You are on a sort of elevator-like platform, and you ascend from level to level. To ascend requires 3 keys; each level has 8 doors with a variety of challenges. These challenges include trap-filled pathways, combat, mini-games of cards/fantasy chess, and occasionally some bizarre extra paths.
Everything is hyperlinks, making combat much more enjoyable than usual. Magic is simple. There is a complex money system, and most levels let you pick between seeing an armorer or an apothecary.
More than anything, it reminded me of Final Fantasy VII and Conan the Barbarian. The enemies start out as zombies and humanoid fungus, but you eventually find Guards of the Tower, Captains of the Tower, and Swordsmen of the Tower, much like Shinra Tower in FFVII.
I got to the 7th stage, but was unable to defeat the end guardian.
The story and writing is exactly the sort of thing TSR was putting out in the 90's. You're in a sort of dreamworld that is stable, and are hired out as an assassin, with the king as your target. The monsters are generally right out of a D&D handbook. There seems to be some mild racy parts, but my French vocabulary doesn't include that sort of thing, so it's easy to self-censor.