Hi, Jasmine! Rotten Tomatoes is an American website where film critics review movies and TV shows. Generally, if a movie or show has a high rating on Rotten Tomatoes, then you know it's going to be good! I hope this helps! :)

The others are correct. In case you're wondering why the site is called that . . . There is sort of a joke tradition (maybe it was real in the old days) that if a show was really bad the audience would throw rotten tomatoes to show disapproval.

Hi Jasmine Le! How are you? In this context "rare" means unusual. It is unusual for critics (people reviewing the tv show) to give such a high rating. Squid game is a great show! I am professional teacher and native speaker from London, UK. My lessons are engaging, interesting and will improve your confidence with English. Kindly look at my profile to book a lesson. Kind regards, Harry! https://www.italki.com/harrym

Rotten tomatoes is a movie review website. People can go there to rate the movie and give it a review, they also have professionals giving reviews. So it is referencing the rotten tomatoes website

Rotten tomatoes is a website where they give critical reviews and professional rating of movies or television shows. In this case Squid game has a rare 100% rating on rotten tomatoes which means that it has positive reviews.