tvN's highest-rated television series are Queen of Tears, Crash Landing on You, Reply 1988 and Guardian: The Lonely and Great God.

[6] While Crash Landing on You became the first tvN drama to cross 20% ratings, and was critically acclaimed for its screenplay, direction and performances.

[7] Reply 1988 received both critical and audience acclaim, with its finale episode achieved an 18.8% nationwide audience share and making it the highest rated drama in Korean cable television history for the next three years.

[8] In addition, Guardian: The Lonely and Great God was also a hit and consistently topped cable television viewership ratings in its time slot.

Its final episode recorded an 18.680% nationwide audience share, the second highest ratings of a Korean cable television drama at the time.