This is a very good question! Obviously, to answer it well, you need to understand the ending of the story and what Desai is trying to suggest or say about human experience. The game of hide-and-seek that somehow turns into something a lot more significant and important causes Ravi to have a kind of epiphany or sudden realisation about himself and his place in the world. Let us examine the last paragraph:
He would not follow them, he would not be included in this funereal game. He had wanted victory and triumph--not a funeral. But he had been forgotten, left out, and he would not join them now. The ignominy of being forgotten--how could he face it? He felt his heart go heavy and ache inside of him unbearably. He lay down full length on the damp grass, crushing his face into it, no longer crying, silenced by a terrible sense of his insignificance.
What Ravi experiences therefore is an ironic moment full of pathos. Having wanted so much to win, he has won, but only to find that the game has been long forgotten. Wanting glory and recognition, he is only ignored. He refuses to participate in the funeral game that the other children are now playing but he has suffered a death--the death of his innocence and hopes. In the face of our hopes and dreams, the world is often absolutely and colossally indifferent.
Therefore any response that you write has to try and capture this sense of insignificance and how specifically Ravi is changed by the experiences of this short story. He will obviously be a very different boy after the story than when he started out. Good luck!