KELLOGG’S™ JURASSIC ADVENTURE SWEEPSTAKES Abbreviated Rules. No Purchase Necessary. For complete Official Rules, go to KelloggJurassicAdventure.com. Begins 4/15/18 at 12:00:00 AM (ET) and ends on 7/31/18 at 11:59:59 PM (ET). Open to legal residents of the fifty (50) United States and District of Columbia who are eighteen (18) years of age or older at the time of entry. Odds of winning depend on number of eligible entries received from all methods combined. Subject to complete Official Rules. Void where prohibited. Sponsors: Kellogg Company, One Kellogg Square, Battle Creek, MI 49016.