A teaser campaign, also known as a pre-launch campaign, is an advertising campaign which typically consists of a series of small, cryptic, challenging advertisements that anticipate a larger, full-blown campaign for a product launch or otherwise important event. These advertisements are called “teasers” or “teaser ads”. A teaser trailer for an upcoming film, television program, video game or similar, is usually released long in advance of the product, so as to “tease” the audience.