Literally, as of the publication of this post, 12 midnight on April 1, 2010, Grenade Games registration is officially open. Registration will be open until April 12th. At that point a random lottery will pick 300 people to compete in the Grenade Games. A list of those names will be posted on April 13th.
The Grand Finale Slopestyle is an invitation only event, but the rest of the events are open to anyone brave enough to step up. There will also be golden tickets available for standout performances during the week. The golden ticket is the other way to make your way into the Grand Finale.
To register go to: http://www.wssf.com/event/grenade-games