Aside from the toys in the Lego Bionicle franchise, Lego has also marketed an ongoing book series, several video games (mostly for the Game Boy Advance), and four computer-animated movies which feature important plot points. A Bionicle comic book is also published by DC Comics and available free to members of the Lego Club. There are also various other ancillary products available, such as watches, toothbrushes, and backpacks, as well as an online adventure game.