I've written a text adventure! It was quite a lot of fun to write. I don't think it'll be massively popular, but you can't have everything. Anyway, you can play it at Red Tower:
The Quest for the Lost Sheep. You have to find ten of Bo Peep's missing sheep. I have a feeling there's about 10,000 words in it, which is quite scary. Maybe I could do nanowrimo after all... if I had the time ;)
I also wrote Clock patience, and managed to win on my first go. I clearly have luck today...