Brahmastra Part One: Shiva has raised Rs 75 crore in gross box office collection worldwide on its opening day, the makers said on Saturday.

Billed as a trilogy, the first installment of the big-budget fantasy adventure epic starring Ranbir Kapoor, Alia Bhatt, and Amitabh Bachchan was released on Friday.

Brahmastra Part One: Shiva has delivered a massive opening day of Rs. 75 crore (GBOC), igniting celebrations across the country, the film industry, theatre owners and audiences, with the weekend total expected to be huge!" according to a note shared by production banners Star Studios and Dharma Productions.

While the movie has received mixed reviews from critics for its story and dialogues, many praised director Ayan Mukerji's larger-than-life vision of 'Astraverse' which blends Hindu mythology with elements of fantasy, something on par with VFX-dominated Hollywood superhero film franchises.

After the box office collections were released, Mukerji shared a brief thank-you note on Instagram.

"Gratitude. Excitement. Hope. A Big Thank You to Everyone Everywhere who has gone to the Cinemas to experience Brahmastra, keeping our movie-going culture vibrant and dynamic. Looking forward to the next few days..." the filmmaker wrote.

"Humbled grateful yet can't control my excitement! Thank you #Brahmastra," tweeted producer Karan Johar.

Brahmastra Part One: Shiva follows a deejay named Shiva, who sets out on a journey to find the origins of his special powers with Isha (Bhatt), a woman he falls in love with at first sight. Bachchan features as Guru, Shiva's mentor.

The film, currently in theatres in 2D, 3D and IMAX 3D in Hindi, Tamil, Telugu, Malayalam, and Kannada, also stars Mouni Roy and Nagarjuna Akkineni.