Nabisco is bringing back Mystery-Flavored Oreos. The mystifying new Oreo hits shelves nationwide on Sept. 16, and our taste buds are ready for the challenge!

Oreo has gone all out on new flavors this year, including Maple Creme Oreos, Marshmallow Moon Oreos, Latte-flavored Oreo Thins, and S’mores Oreos.

Three packs of the Mystery Oreos will be released featuring one different hint per pack, and the first clue is the flavor itself. Through Nov. 10, you can submit your flavor guesses to http://www.MysteryOREO.com for a chance to win $50,000. Every correct guess is counted as an official entry to the sweepstakes, and one person will be randomly selected to receive the grand prize. Considering that the 2017 Mystery Oreos turned out to have the super familiar flavor of Fruity Pebbles, it may not be too difficult.