With previous console-based Dynasty Warriors games, the player was free to roam about one vast battlefield. One stage could take more than 30 minutes to complete. Stages this long would not be convenient for a mobile gaming environment. So in the PSP version of Dynasty Warriors, each stage is divided into a network of smaller "battlefield areas" (BA), with each area holding a different degree of strategic importance.
These areas influence each other and change according to the battle situation. If the player wins in one area, the victory may create a positive influence in other areas (i.e. increased morale). Or if an allied army retreats, this may decrease allied morale. As a result, the player must be aware of the status of each BA, decide an appropriate battle policy and lead his army to victory.