"It is a time of civil war.
The ninjas of AzumaShinobi-ryu faithfully serve Goda Matsunoshin, the head of the Goda clan. You are a clan ninja, and have been given orders by Rikimaru, the chief ninja of AzumaShinobi-ryu. He tells you that recently there have been disturbing movements from the Ogawara clan, which has been rapidly expanding its influence and whose existence poses a threat to Goda. The Odawara have managed to secure a heretofore unimaginable military might, and before long they will take a stand against Goda..."
Tenchu Z drops players in Feudal Japan, the land of ninjas, where a variety of missions await. If typical ninja fashion the missions consist of tracking enemies, gathering information, and of course assassinating wrong doers. You'll get to customize your ninja with a host of costumes and accessories, and acquire power-ups as you succeed in missions.
The game can be played in solo mode, or in up to four player co-op mode via Xbox Live.