There wasn't only a haunted house in Hell World, there was also a foggy forest, thrilling mazes, and small black houses and so forth. All of them were horrible and exciting games with safety facilities.
However, before visitors went to play those games, it was necessary for them to sign an agreement. If any accidents happened due to personal health problems, the amusement park wouldn't take the responsibility. Since some people weren't in a good condition, they shouldn't play thrilling games and should be responsible for their own bodies and the public amusement park.
If the amusement park had to be responsible for personal health problems, what if those sick people who didn't have money to treat their illnesses came here to defraud the amusement park for treatment fees?
The amusement park was unwilling to be trapped by dirty tricks.
