A mockbuster (also known as knockbuster or drafting opportunity[1]) is a film created to exploit the publicity of another major motion picture with a similar title or subject. Mockbusters are often made with a low budget and quick production to maximize profits. "Mockbuster" is a portmanteau of the words "mock" and "blockbuster".
The animated knockoff is what's known in the film industry as a 'drafting opportunity.' ... The Asylum, a production company in Burbank that built much of its business with what staffers lovingly call 'mockbusters,' ...