In anticipation of next year's surefire megahit Space Jam: A New Legacy, Microsoft and LeBron James—with some help from Bugs Bunny—have announced a new contest in which fans are given the chance to help create an original arcade-style video game. Starting Dec. 14 and running through Dec. 30, anyone who's at least 14 years of age can throw their proverbial hat in the ring by submitting game proposals via the official contest site. First, review the official rules, then pick a genre. From there, you'll select a key image and give a 500-words-or-less pitch describing your idea for the game. Ultimately, two winners will see their respective ideas put into motion as part of the official