Accomplishing a biventricular repair is the prime goal of any surgical procedure on congenital heart defects as it leads to a near normal anatomy and the long-term results are better than any univentricular repair. In some patients, this is not possible because of the inherent developmental defect. However, there is a population of patients, where the complexity of the intra-cardiac anatomy has precluded a biventricular repair despite the presence of two functioning ventricles. Use of modern imaging techniques coupled with construction of 3D print models has made it possible to study the feasibility of such complex intra-cardiac biventricular repairs. Our surgical team is routinely using this modern technology to plan and carry out such complex biventricular repairs both in newly-diagnosed patients and in patients who have previously undergone univentricular repair due to unavailability of these modern tools.