Mumbai: Actor Emraan Hashmi said that playing the role of gangster Shoaib in the hit 2010 film 'Once Upon a Time in Mumbaai', which clocked six years of its release on Saturday, was both challenging and enjoyable for him.

Directed by Milan Luthria, 'Once Upon a Time in Mumbaai', which released on July 30 in 2010, also featured Ajay Devgn, Kangana Ranaut, Prachi Desai and Randeep Hooda.