Fire up your Xboxes Halo nerds, it's time for Sarkathlon 3!

That's right, X-Play's own gaming pro Mr Sark has thrown down the gauntlet. Are you up for the challenge? If you think you have the cunning skills and gritty determination it'll take to tackle his special designed Halo 3 obstacle course, then you should watch the video below to find out how to get in the game.

He'll explain it all, but here's the short version: Mr Sark has lovingly built a course that will blow your mind in the sky above Sandbox (so you'll need to download the Mythic Map Pack if you haven't already). You go to Bungie.net, download the goods and then use your amazing Halo skillz to figure out Sark's mad genius. Once you've captured your fastest time, add the file to your share and email the link to mrsark@g4tv.com.

I know you're wondering: besides the eternal glory and bragging rights that come along with being the Sarkathlon 3 champion, what else can I win? A bangin' Game of the Year Xbox 360 Bundle, that's what! So hurry, because Sarkathlon 3 ends at midnight on May 10th.

Good luck!

Click below for the official rules.

OFFICIAL RULES:  One grand prize in the “Sarkathalon 3 Gamer Challenge” will be awarded to the entrant who completes the Sarkathalon 3 Halo course in the fastest time.  Grand prize is a “Game of the Year Edition Elite Xbox 360 Bundle.”  Approximate retail value:  $399.00.  Email proof of your course completion time to MrSark@g4tv.com.  Official Sponsor:  G4 Media, Inc.   Sponsor will verify time and eligibility requirements.  All decisions of Sponsor are final.  Contest entry period begins April 30, 2009 at 8:00 p.m. Pacific Time (PT) and ends at 11:59:59 p.m. PT on May 10, 2009.  Enter as many times as you like.  Only your fastest time will be counted.  Sponsor is not responsible for technical failures of any kind.  Winner will be announced on X-Play the week of May 11, 2009.  Open to legal residents of the 50 United States and DC.  Must be 18 years of age or older (or 13 years of age or older with parental consent).  See Mr. Sark’s contest description at www.g4tv.com/sark3 for additional details.