Besides teaching, he was a painter, did illustrations, was a graphic artist, and even did scenery design.
Around the war years, he embraced cubism and a Polish variation of post-Impressionism, called Colorism.
[1] Marczyński exhibited at many international art festivals, including the Venice Biennale in 1956 and the documenta II in Kassel in 1959.
[3] A catalogue was published in 1985 at a posthumous retrospective at the Gallery of the Office of Artistic Exhibitions in Kraków.
[1] His work was also part of the painting event in the art competition at the 1948 Summer Olympics.