Byron Alexander Campbell's "Room 206" was released a while ago in ALAN3, and according to a current thread on rec.games.int-fiction he is working on an Inform7 implementation of the game. This review is based on the ALAN3 version and has mainly only mild spoilers. More straightforward spoilers will be marked below.
As to its length, the game is rather extensive - easily longer than the average IF Comp game and maybe the longest ALAN3 game produced. In the beginning of the game we find the hero in a chapel right after a wedding. Curiously, he can't seem to find his newly-wed wife anywhere; she has gone outside the chapel a bit before him to say goodbye to the guests. Outside, however, there is just an empty limousine waiting, as well as the empty chapel grounds with no people around. Initially, you only seem able to wander around the few locations in and around the chapel. Soon, however, it becomes evident that there is more to this story than meets the eye. You begin to get hints of everything not being quite right when you find a ladies' shoe - instead of, say, a bottle of champagne - in an ice bucket in the limousine, and other similar things. From there on it's an unpredictable ride with lots of twists and turns. The game turns out to have a rather sinister and disturbing plot and could be classified as a horror story.