"Enter 25 words or less about your favourite pizza topping for a chance to win!" We've seen these sorts of competitions before that supposedly reward your creativity when, in all likelihood, it'll be randomly drawn anyway. Not so for NVIDIA, which has taken the concept of writing to win to another level, with the aid of interactive fiction writer Emily Short. Together they've produced "Ultimate Quest" a text adventure about a "journey to the far side of possible".
And when it says "text adventure", it means it. To perform actions you have to "tweet" them, much like you'd type out commands in an old Infocom game. This of course means signing up with a Twitter account and letting it run rampant on your timeline. I wasn't game enough to bombard my followers with my mostly random approach to text-adventuring, but I did take a few screenshots beyond the login page.
The title page mentions that "the first players to finish will win something big", though a perusal of the terms and conditions reveals that the first 50 players to succeed will score themselves an "NVIDIA hardware product" worth $US397. That said, it's entirely possible that a couple of early birds could snag something more impressive.
The competition will run from 18-22 July, giving you five days to get through all the episodes -- so one a day if, for some reason, you want to pace yourself.