It is believed that Kulasekhara Varma, a medieval king of the Chera Perumal dynasty, reformed koodiyattam, introducing the local language for Vidusaka and structuring the presentation of the play into well-defined units. He himself wrote two plays, "Subhadradhananjayam" and "Tapatisamvarana" and made arrangements for their presentation on stage with the help of a Brahmin friend called Tolan. These plays are still performed. Apart from these, the plays traditionally presented include "Ascaryacudamani" of Saktibhadra, "Kalyanasaugandhika" of Nilakantha, "Bhagavadajjuka" of Bodhayana, "Nagananda" of Harsa, and many plays ascribed to Bhasa, including "Abhiseka" and "Pratima".