Lost Pig

I've played a lot of interactive fiction, and Lost Pig stands out, because it was really fun to play from start to finish. The interactions with the pig and other characters in the game are enjoyable. The descriptions, written from the perspective of your curious, observant, but not-so-literate character, are quite funny. I felt myself sink into the character I was playing very easily. The puzzles were interesting, and made sense. This is a really well designed game.

One puzzle near the end gave me a little trouble, and I was appreciative of a built-in hint system which, invisi-clues style, would only give you as much help as you needed.