The start of the film 's shoot , initially scheduled for December 2015 , was delayed as a result of the 2015 South Indian floods . Production began in Visakhapatnam during January 2015 with scenes featuring Shruti Haasan as a journalist being shot . Following a series of action sequences shot in the city , the team moved to film song sequences in Romania with Anushka joining the team . After a production break , the team restarted the shoot in Visakhapatnam , before moving to the Talakona Forest region and then on the AVM Studios in Chennai during mid-2016 . The team moved to Malaysia to finish filming the climax in October 2016 , before a further song was shot in Georgia with Suriya and Shruti Haasan . In January 2017 , the film was re-titled from '' S3 '' to '' Si3 '' ( spelt சி3 in Tamil ) to exploit the Tamil Nadu Government 's rule of entertainment tax exemption for films titled in Tamil
2015 South Indian floods
2015 South Indian floods
Singam (film series)