Allied Shadow war is a unique matching game in which you eliminate enemy monsters using their own shadow monsters. Each time you get the chance. You get 2 monsters on the 2 opposite corners of the board region. Move mouse to align them with similar monsters. Click them to let them enter the region. If the newly added monsters form a group of 3 or more similar monsters they will eliminate the whole group. Otherwise they will be allied with the enemy monsters to increase your troubles.