Fail-Safe

Completely by accident, I played Fail-Safe in the same week that I played the Infocom classic Suspended. Fail-Safe is essentially Suspended's more cynical little brother. In both games, the PC is immobile and completely dependent on NPCs for sensory input, movement, and manipulating objects. Both are also set in science-fiction worlds where a massive calamity has just occurred, and the PC has to walk the NPCs through repairs that they have trouble describing and can only dimly understand.

Fail-Safe is very short, and as mentioned elsewhere, does not permit saves or restores, which is less painful than it might sound. Once you have figured out the basic plan of the game, you can quickly get back to the part where the crucial decisions are made (and where the game's black humor really shows itself). You'll definitely want to replay a few times to make sure you get all the endings. At one point, there's an unfortunate guess-the-verb problem, but for the most part Fail-Safe is entertaining, well-written, and definitely worth playing.