Last year I wanted to do something for PROCJAM, Mike Cook's "make something that makes something" one week game jam, but circumstances conspired against me. This year, I collaborated with Liz England, and we made a horror interactive fiction game called Mainframe. It's about a spaceship and its mainframe and something is wrong and it needs help.
Making it was a great experience. I learned a lot, and I'm going to be talking about it more.
The texts, assets, and source code can be found on GitHub.