Absence of Law is different from your usual IF. Instead of your character in the story being physically present in the game world, DaedalOS, an AI operating system controlling Stygicorp, the lab where the game takes place, also takes the role of the parser.
Even with AI operating systems and brain backup units, the mostly three-character commands bring a feeling of nostalgia.
The story is divided into three main independent sections. The game doesn't seem to have unwinnable states, and there's plenty of easter eggs. The music is one of my favorite aspects of the game.
It is very immersive; even supposedly out-of-world commands have in-world explanations, and nearly all error messages have been replaced with appropriate messages.