The movie is set to release on Diwali next month.
"It's a multi-genre film. It's got adventure, action, horror, comedy. The film, when it came up, it was a huge budgeted film, and I was wondering whether we could even pull it off," Karthi told PTI.
"But I was so glad that we had a team, which was very committed for two years, they stuck to the project, they pulled it through," he said.
Karthi is playing two characters in the film and the actor said he enjoyed every bit of both the roles.
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"It is a very entertaining film. There are two kinds of characters and different style of performance to it. I really enjoyed playing those characters in the film. It was very exciting for me. Ever since I looked at the script, I was raring to go and shoot the film," Karthi said.
"It was challenging because there was period attached to it, and we had to do something which is not resembling anything else. That way interesting and challenging."
"I have got one or two offers. It's in a very nascent stage, right now. Let's see, If it turns out, I might try. Earlier, I used to say I don't want to go to Bollywood (which is not the case now). I am not thinking of staying there (in Bollywood), or anything, but looking at opportunities of doing something which might be interesting. This particular script seems to be interesting."
languages as long as script is very interesting," he said.
Karthi added he got a couple of offers for Kannada and Malayalam movies but did not take them up because they were not promising and interesting and not "worthy enough" for the extra effort that he would have to make to learn those languages.
But he hastened to add that he would certainly experiment in different languages.
Karthi, who worked as an assistant director to Mani Ratnam in "Aayutha Ezhuthu" nearly a decade ago, said he does not intend to get behind the camera again anytime soon.
"Unless I start reading more and writing, I don't have a story to make. And, I seem to be enjoying acting too. So, I am not thinking of direction anytime soon," he added.