Microsoft is holding a campaign to commemorate today's release of Sega's After Burner Climax.

Those who download the game or its free demo from today through May 9 at 23:59 will be entered into a Microsoft Point raffle. 500 people who downloaded the demo will receive 200 MS Points. 500 who downloaded the full version will get 800 MS Points -- which amounts to getting a refund on the full purchase price.

You're automatically entered into the campaign when you make the download. See the campaign page for further details.