A "Bridge Baby" is a fictional concept from the video game series Death Stranding, created by Hideo Kojima. In the game, these babies are connected to the world of the dead and serve as a bridge between the living and the deceased. They are used by porters to sense BTs (Beached Things), which are supernatural entities that pose a threat to the living. Bridge Babies are kept in special pods and are often referred to as "BBs." They play a crucial role in the gameplay, as players must manage their connection to these babies while navigating a post-apocalyptic world. The emotional bond between the player and the BB adds depth to the game's narrative.