The Northnorth Passage.

In this game, you are in a room that seems incredibly detailed, with many NPCs. As you progress, there are interesting locations, exciting events, and complicated scenarios.

However, it is all for naught. The family curse has activated in you, so that any action besides GO NORTH will cause your death. Time and again, it seems like some other action is needed, but only GO NORTH is allowed.

This is amusing, and would not work nearly as well in a short story. This exact feeling of helplessness is unique to an interactive format, and it's a welcome effect.

Strongly recommended.