Koan

In 1998, there was In the Spotlight, a tiny but enjoyable game whose entire purpose was to embody one clever puzzle. Then, last year, there was Schroedinger's Cat, a less enjoyable (though competently produced) game whose sole reason for existence was to embody a completely baffling puzzle. Now we have Koan, a fairly irritating and badly programmed game that embodies one more-or-less nonsensical puzzle. Clearly, we're on a downward slope here.