Our world is built on opposites: good and evil, black and white, yin and yang. Balance is important to keep balance. It will be the same in the game Yin and Yang, so that two characters living in different worlds can connect. This is by definition not possible unless you intervene. For the characters to connect, you need to go through all the levels. To pass, one of the heroes needs to get to the exit, it is indicated by a white or black door, depending on where it is. You will have to jump through the levels and the main thing is not to miss, if necessary, you can turn the world over and then the black space will be at the top, and the white one at the bottom. To do this, just press the X key. Think about how to make the problem solved faster.