Create a custom Trials HD track for the chance to win $5,000 and more! Check out the steps below to learn how to enter or click on the Trials HD links to learn more. You must be one of the first 10,000 people to enter by 18th August 2010, to be eligible to win.
PRIZES:

• 1st place: $5,000 and Trials HD sweatshirt and flag
• 2nd place: $3,000 and Trials HD sweatshirt and flag
• 3rd place: $1,000 and Trials HD sweatshirt and flag
• 4th - 10th place: Trials HD sweatshirt and flag

Plus all 10 winners will have their custom tracks published in the Big Thrills Expansion Pack, alongside tracks created by RedLynx!

1. Create a track

Create a new custom Trials HD track. Make sure the track is innovative, fun, creative and challenging, yet playable. (Tracks will be judged based on these criteria.)

2. Submit your track

Friend request one of the Trials Tracks Challenge Contest Gamertags (TrialsContest1, TrialsContest2, TrialsContest3 or TrialsContest4) so they can review your custom track. (You'll receive confirmation once it's accepted).

3. See if you've won

Check the site on November 15, 2010 to see the winners!

Source: https://microsoft.promo.eprize.com/trialshd/

Better get my imagination in gear!