New Delhi: Director Mani Ratnam's magnum opus 'Ponniyin Selvan 1', which is based on eminent writer Kalki's literary classic by the same name, has grossed a whopping sum of Rs 200 crore worldwide so far, its makers announced on Monday. Lyca Productions, which has jointly produced the critically acclaimed superhit film along with director Mani Ratnam's Madras Talkies, on Monday, …