Directed by Vivek Budahoti, "Pied Piper" had its world premier at the Chicago South Asian Film Festival and was also screened at the Fer Film Festival in Ferizaj.
It will also be shown at the ongoing Mumbai Film Festival.
"I enjoyed every moment of the film and I am glad that the global audiences are loving it. As an actor, the film has been immensely satisfying," Rajpal said in a statement.
The film revolves around the life of a laundryman, Chunnilal, rumoured to have acquired his beloved donkey's brains in a freak accident.