The game's new "Team Battle System" and "Weapon Fusion" push Tactical Action to a whole new level. For the first time in KOEI's Tactical Action games, players can create their own three-person tag team. At any given time, one warrior will be engaged in battle, while the other two are recuperating; restoring their Life Meters and Musou Gauges. Every character is categorized according to offensive ability, and with new fighting techniques, it's up to the player to find the most lethal combination of warriors. "Weapon Fusion" lets players combine the attributes from different weapons for more devastating results.
Warriors Orochi for PSP boasts the massive seamless battlefields of the console versions, while previous games in the series for handheld platforms had combat taking place on battlefields divided into smaller "cells". The handheld release includes all 79 playable characters, and features 2-player co-op play via wireless (ad-hoc).