Beautiful has a broader and deeper meaning, and I guess they don't want to conflate the two.
For example, if you say "this movie is really beautiful", it means the movie touched you on an emotional level, or its message resonated with you, but if you say "this movie is really pretty", it means you liked the cinematography or found it aesthetically pleasing.
I personally think you can use beautiful when you mean pretty, but not the other way around.
basically it's a game. you're given the description of something and you have to say what the thing is that is being described. however, you have to give your answer as a question. for example, it may say "the maknae of bts." you would answer, "who is jeon jungkook." (i've never watched anyone play jeopardy and haven't played it in school for a while so someone pls correct me if i'm wrong)
Well actually it is a trivia game, where there are different categories, like 'movies' 'sports' 'pop culture' etc and each category has 5 questions you can choose, each question will give you a certain amount of money. (200, 400, 600, 800, and 1000). When you choose one of the categories plus the amount (ie 'Sports 800') then it will give a question like 'What NFl team won in blah blah' and if you get it right you get the money, the person with the most money in the end wins. Also, there are multiple rounds.
A day at school Student: Mister, why are you fat? Mr. Garam: You offend me like that? Leave my classroom! The next day. Student: Mister, what food do you like? Mr. Garam: Bring me chocolate tomorrow. Student: What is not pretty? Mr. Garam: Student: Your fat face stuffed with chocolate. What kind of Kdrama is this :'(