Brandon Sanderson and Brotherwise Games have officially launched the Kickstarter campaign for War of Roshar, a new strategy board game. Sanderson has been calling this "the big one" in the leadup to this campaign and the fans seem to agree. More than $1 million has already been pledged in the first day, with 23 days left to go.War for Roshar will join a growing lineup of Cosmere board games in collaboration with Brotherwise. IGN had an exclusive…