We do a lot of game jams at Buffalo Game Space. One of the challenges with jams is disruption -- the excitement of the jam and all the new ideas can interfere with completion of your other longer-term projects. So we had the idea to have a month-long event where you pick a milestone for one of your projects and try to complete that milestone over the month.

For my milestone I wanted to get Melbor (my Apple II Z-Code interpreter) to the state where it could run through a simple story file. I had implemented many core parts (such as text printing and various instructions) but hadn't hooked it up to an actual VM.

The event was a definite success for me -- I hit the milestone (though barely) and got a simple story file running on my IIGS. Overall I think it was a success, we had a dozen or so people participating and even people who didn't hit milestones felt like it helped focus their work.