Writing and gamification

I've become a recent convert to Scrivener. It's a piece of software designed to help writers organise everything from their research and random thoughts to the final work.
But it's also a lovely example of subtle gamification (the idea of making tasks more rewarding and more likely to be done by borrowing from the gaming industry). One of the things you can do with it is set a project target (ie how many words you need to write overall) and also a day's target (how many words you need to write that day).
For my current book, I've decided I want to write around a thousand words per day and forty thousand words in total by sometime in April. Up pops the targets window which I can park next to my writing window (I knew there was a use for these new fangled widescreens).  It's a wonderful feeling seeing the number of words gradually increase as you type and the target progress bar also turns from amber to green in colour. Go over the target number of words and you are rewarded with a lower target number of words to write the next day.
It's certainly helping to crystalise my new habit of getting up first thing, sitting at my desk and hammering out some prose while eating breakfast.  Seven days so far - can I make it to the magic twenty one or so days it takes to embed a new habit? I hope so as it gives a wonderful feeling of satisfaction to start your day with a good chunk of words under your belt.