During his primary school days Das was profoundly influenced by the traditional open-air theatre form, "jatra", which he used to witness in his village.

Asim Basu, started an amateur dramatic troupe in 1967-68 called Roopakar Natya Group.

Biswajit Das and Ananta Mahapatra joined the group and it was decided to offer something new to the audience other than just recreation or amusement.

The group gave new thoughts and posed new questions to the intellectual elite that made the plays more vibrant and attractive.

Biswajit Das was a powerful, experimental, contemporary Odia dramatist who authored many plays of great prominence.

The Naba Natya Andolan: (New Theater Movement) started with modern experimentation of plays inspired by Ibsen, Brecht, Freud, Bernard Shaw and Sartre.

Biswajit Das wrote more than 60 one act plays which include Chhadmabeshi, Tandra, Dahini, Show, Banshi, Byartha Lagna, Trushna, Antara, Chief Guest, Probesh-Prasthan, Kitta, Suryastha, Shilpinka Anupasthitire and Swarga Martya.

Nishipadma (Nocturnal Lotus) in 1967, Nalipana rani kalapana tika (Queen of Hearts and Ace of Spades) in 1968, and Nija pratinidhinka tharu (From Our Correspondent) in 1968, are some of his prominent plays.

This was an experimental play of a different taste, analysing artistically the agony and helplessness of hypocritical human beings.

Das wrote his play "Nalipana rani kalapana tika" for a competition organised by the Odisha Sangeet Natak Academy.

Unlike many of his contemporaries Das was not a prolific writer, but his body of work is remarkable for its qualitative excellence.

Das wrote a weekly column called "Bhinna Swar" (Different Tunes) in the Sambad daily newspaper, which was subsequently compiled into a collection of short stories.