"Vilaiyaadu Mankatha" (Tamil: விளையாடு மங்காத்தா; English: Play Mankatha) is a song by Indian artist and film composer Yuvan Shankar Raja. A part of the soundtrack album to the Tamil film Mankatha, it was released as a single track on 20 May 2011. The song was performed by Ranjith, Premgi Amaren, Sucharita and Anitha along with Yuvan Shankar Raja, while Gangai Amaren, Sucharita and Yuvan Shankar Raja penned the lyrics in Tamil, Hindi and English, respectively.

A teaser the song was released on Ajith Kumar's birthday, on 1 May 2011 on YouTube, after plans of releasing the film or the soundtrack on that day had failed. As the teaser garnered high response and became a success within few days, Venkat Prabhu and Dayanidhi Azhagiri decided to launch the complete version of the song as a single separately ahead of the complete soundtrack album.

Four songs were included as bonus tracks to the single release of "Vilaiyaadu Mankatha", all of which were part of earlier soundtracks by Yuvan Shankar Raja and were marketed by Sony Music Entertainment. The four songs - "Dia Dia Dole" performed by Suchitra for the film Avan Ivan, "Goa" from the same-titled film featuring vocals by Krish, Ranjith, Tanvi Shah, Suchitra, Chynk Showtyme and Pav Bundy, "Yogi Yogi Thaan" from Yogi sung by Blaaze and Neha Bhasin and the title track from Theeradha Vilaiyattu Pillai rendered by Andrea Jeremiah, Tanvi Shah, Vinaitha and Ranjith - were added in their original composition without any variation.

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