Ahead of Saturday's Warner Bros. TV/DC Entertainment extravaganza at Comic-Con, Fox is making a big splash with a new Gotham campaign.

The network is asking fans to create their own Gotham poster and/or trailer with the grand-prize winners earning a trip to the New York City premiere party of the Batman prequel series, The Hollywood Reporter has learned.

PHOTOS The Scene at Comic-Con 2014

The poster contest tasks fans to design a one-sheet utilizing specific assets, such as graphics, fonts, images and title cards provided by Fox.

The trailer contest calls on fans to recreate a scene from the new 60-second trailer for the show, which THR debuts below, in whatever fashion they see fit. Fox will then edit together the best submitted scenes and images into a full-length trailer that will debut online for a scene-by-scene recreation of the original. (Submissions for the trailer are only available via desktops, laptops and tablets.)

Both contests end at 11:59 p.m. PT on Aug. 20, with the winners announced Aug. 27. The winner of the poster contest also receives a printed version of their winning key art signed by the cast. For the full rules and assets, go to fox.com/gothamcontest.

This is just another move by Fox to capitalize on Gotham, which already has a huge presence at San Diego's Comic-Con. Fox has unleashed a blanket marketing campaign, which includes a popular harbor-front zip line, a Gotham PD Uber service, Gotham Chronicle newspapers, the GothamChronicles.com town website and branded trolleys and cabs.

Gotham will hold its first premiere screening Saturday evening in Hall H. Gotham premieres on Sept. 22 at 8 p.m. on Fox.

Email: Philiana.Ng@THR.com

Twitter: @insidethetube