The children cannot go outside because the sun is too dangerous during the day. They have to wait until twilight, when the sun goes down.
The short story “Games at Twilight” takes place in India. In the beginning of the story, the children have been trapped in the stifling hot house with all of the curtains closed because the sun is too hot outside. Although it is still hot in the house, it is the sun that is dangerous.
They had had their tea, they had been washed and had their hair brushed, and after the long day of confinement in the house that was not cool but at least a protection from the sun, the children strained to get out. (para 1)
The children are bored and feel suffocated from being cooped up. The house is hot and stuffy, and they tell their mother they will stay on the porch and out of direct sunlight, but she knows they won’t. She knows her children. As soon as she opens the door, they forget about the porch.