[2] It ran for 15 weeks (from 17 June to 30 September 2018),[3][4] and aired on Star Vijay weekdays from 9–10:30 am and 9–11:00 pm on weekends.

The renovated house included a "jail room" to increase the severity of punishment for contestant mistakes.

[6][7][8][9] The winner of Bigg Boss Tamil 2 was Riythvika, who won a trophy and a cash prize of ₹50 lakhs (₹5 million).

Thaadi Balaji and Shariq Hassan returned as contestants in Bigg Boss Ultimate (season 1).

1.Vijayalakshmi Feroz, actress, producer and daughter of director Agathiyan who starred in the films Chennai 600028 (2007), Anjathe (2008) and Chennai 600028 II (2016) and the Sun TV series Nayaki Yashika Aannand, Ponnambalam, Mahat Raghavendra, Daniel Annie Pope, Vaishnavi Prasad, Janani Iyer, Ananth Vaidyanathan, Ramya NSK, Sendrayan, Riythvika, Mumtaz, Thadi Balaji, Mamathi Chari, Nithya Balaji, Shariq Hassan Khan and Aishwarya Dutta Janani Mahat and Mumtaz None Ananth, Mumtaz, Nithya and Riythvika None[39] Nithya Mamathi and Ponnambalam None Ananth, Mamathi, Mumtaz and Ponnambalam Intha Veetil Yaar Sirapaaga Nirvaagam Seyya Koodiyavargal - Aangala Pengala?

[25] Daniel (evicted on day 77)[59] Yashika Aishwarya, Mumtaz, Riythvika, Sendrayan and Vijayalakshmi None Aishwarya, Janani, Mumtaz, Sendrayan and Vijayalakshmi Housemates were told by phone that they were nominated for the following week's eviction, and must convince another housemate to perform a task to save themselves from the nomination.

According to BARC India, the season had a TRP of 9.7 overall and 12.8 in Chennai alone, in its opening week in urban areas with 3.7 Crore viewers.