Kidneys, hearts, livers, and lungs are the most coveted organs for transplant, but 117,521 people in the US still need organs due to shortages. 3D bioprinting uses cells as "ink" to build tissues and organs layer-by-layer using bio-printers like the NovoGen MMX. This mimics the natural biological process of embryonic development. Current progress includes bioprinting human ears and building kidney and skin grafts. In the future, bioprinting may help double the number of organs available by reducing transplant wait times. However, challenges remain in vascularizing large organs and achieving full integration and function.