Play an adventure without leaving the DOS prompt! Like Mecha-Godzilla: The True Story, this game consists entirely of .bat files, one for each verb. Game state is stored in environment variables. As for the game itself, it's a parody of Tolkien's work. To say more would be to repeat most of the game's text - this is a tiny tiny game, and should take all of ten minutes to solve. Worthwhile for the novelty of the implementation.
-- Carl Muckenhoupt