Cineplex Entertainment is expanding its special screening program for people with autism spectrum disorder and their families.

The Canadian movie theatre company says its sensory friendly screenings will now include 17 additional theatres, for a total of 29.

The screenings include 2D projection, increased auditorium lighting, lower speaker volumes and smaller crowds.

Theatres also allow families to bring in outside food and take a break from screenings in a nearby "calm zone."

The screenings launched last month and take place on select Saturdays at 10:30 a.m., before theatres open to the general public.

The next one is on April 4 and will feature Cinderella.

The program was developed in concert with Autism Speaks Canada.