After going through a couple of auditions, she was selected to play the role of Karuthakanni, a young woman who gets tortured and sexually exploited in the plantations.

[1] She went on to act in Vikraman's romance film Ninaithathu Yaaro (2014) before being chosen by Pa. Ranjith for Madras (2014) to play a pivotal supporting role opposite Kalaiyarasan.

Her portrayal of a North Chennai girl was lauded by critics and she won the Filmfare Award for Best Supporting Actress – Tamil besides several other nominations.

[4][5] In other assignments during the period, she featured as a liberal radio jockey in Oru Naal Koothu (2016), and as a ghost in the horror comedy, Onaaigal Jakkiradhai (2018).

In 2018, Riythvika appeared in the reality show Bigg Boss Tamil 2 as a contestant, and later emerged as the winner of the 2nd season in the franchise.