Circus Caper © 1990 Toho Company, Limited.
North American release. Game developed in Japan. See the original Famicom version for more information: "Moeru! Oniisan [Model THF-M7]".
Description from the back cover:
Thrills, action and fantasy! Circuses are always full of dreams and hope. A big circus comes to a city where Tim and his sister Judy live. However, they can afford only one ticket. Tim kindly gives it to the little girl, "Thanks, brother," Judy says. "Be sure to meet me at the exit after the show." But Judy fails to appear after the show. Mr. Magic, boss of the circus, looms in front of Tim who is anxiously waiting. "You'd better give up on your sister," the malicious magician chuckles, as he tells the boy he kidnapped Judy. "Shucks!" Tim shouts. "You can't do that!" Tim rushes in to rescue his sister. Wicked clowns, tightrope artists, and ferocious animals attack Tim, who fights with a yo-yo, a hammer and a soccer ball. Go, Tim! Beat them all and get the key to the tent where Judy is confined. Rescue her as soon as possible!