"BOMB(s)" and "abysmal", British film critic Leslie Halliwell instead writes that no star "indicates a totally routine production or worse; such films may be watchable but are at least equally missable." Like Halliwell and Dave Kehr, film critic Jonathan Rosenbaum believes one-star films have some merit, however unlike Halliwell, Rosenbaum believes that no stars indicate a "worthless" movie. Roger Ebert occasionally gave zero stars to films he deemed "artistically inept and morally repugnant." Scheuer's guide calls "one and a half star" films "poor", and "one star" films "bad". Not all film critics have approved of star ratings. Film scholar Robin Wood wondered if Sight and Sound readers accepted "such blackening of their characters." Jay Scott of Canada's The Globe and Mail was an opponent of using symbols to summarize a review and wrote in 1992 that "When Globe editors first proposed the four-star system of rating movies about a year ago, the response from Globe critics was, to put it mildly, underwhelming." More recently, Mark Kermode has expressed a dislike of star ratings (assigned to his online reviews but not his print or radio reviews) on the grounds that his verdicts are sometimes too complex to be expressed as a rating. Comedy and theatre Star ratings are also given out at stand-up comedy performances and theatre productions. Star ratings are given at the Edinburgh Festival Fringe, the largest arts festival in the world. Since 2010, the British Comedy Guide has collected over 4,300 reviews of around 1,110 different acts, across 83 different publications in the form of a star rating. The use of star ratings is controversial because the public may ignore the reviews and concentrate more the star ratings alone. Video games Star ratings are not often used to rate the quality of a video game but are rather used within certain games for varying purposes. One notable use of the star system is to grade a player's performance in completing a level with up to three stars, used in many modern multi-level games like Angry Birds. This three-star rating system challenges the player to repeat and fully master previously beaten levels in order to receive a perfect 3-star rating, which may confer other benefits or bonus content. Another use of star ratings is to denote the rarity of characters in video games where players are tasked in collecting numerous characters, such as Star Wars: Galaxy of Heroes and