A "debut trailer" is a short video that is released to introduce or reveal a new movie, game, or product to the public for the very first time. Full definition
You can watch the game's stunning debut trailer below. (gimmegimmegames.com)
We're sure you're looking to watch those awesome debut trailers from The Game Awards 2015. (heavy.com)
Having been given a cinematic debut trailer a couple of weeks ago, they were able to focus more on in - game footage, gameplay and new features for the game. (linksaveszelda.com)