Vipul Amrutlal Shah, whose forthcoming film Action Replayy has an extra "Y" in its spelling, cited numerological reasons for it.

"It's because of numerology that we have altered the spelling of the film. We all are superstitious, so we have kept the name according to numerology, " Shah told reporters here, while showcasing the first look of Action Replayy.

Directed by Shah, the movie stars Akshay Kumar, Aishwarya Rai, Neha Dhupia, Randhir Kapoor and Rajpal Yadav, among others.

Based on a 1994 Gujarati play of the same name, it is a time-travel comedy capturing Mumbai in the 1970s. The film is slated to hit the screens on Diwali (Nov 5).

"The film is based on a play that I did in 1994. Nothing major has changed except that we have adapted the script for cinema. That show was hugely successful so I wanted to bring it to this medium. The role that I played in the play is being played by Rannvijay, " Shah said.

Throwing light on the making of the film, the filmmaker, who has earlier made flicks like Aankhen, Waqt: The Race Against Time, Namastey London, Singh Is Kinng and London Dreams, expressed that this was one of the most difficult films to make.

"This is one of our better products and quite difficult to make. We all have really worked hard on it. We were shooting in Karjat that time and the temperature was too high.

"People were fainting on the sets. In such a situation not letting the sweat show in the shot was very difficult. Every artist has gone through their share of torture during the shooting of this film. For the technical group to create a very happy looking film in that situation was very tough. But we did it because we all believe in it, " said Shah.

In most part of the film, Akshay and Aishwarya, who are teaming up again after Khakhee, will be seen sporting the retro look.

So why this sudden interest in that era?

"Its true that few others films this year have also shown touches of the 1970s, but it's just a coincidence that my film is releasing in the same time, " he said.

"There was no intention of copying something popular. But we've seen that retro has the best connect with the audience. That was the era that the youth connects to because it was colourful, the music was great, 70s created a revolution in style, " he added.