Making a game, writing a novel, recording music -- anything you want to create takes commitment. Streak Club tracks your activity on your "creative streaks" so you keep on creating.
When you join or create a new streak, you'll get a calendar of squares to fill. Try to fill as many rows as possible within the start and end dates. You can invite friends to join you or join public streaks to keep motivated with others.
This is similar to the "don't break the chain" concept, but a bit more flexible and forgiving, since you don't have to feel bad if you miss a calendar day. You just get the reward of a new green box every time you work on your craft. That could be a powerful thing.