A Declaration of War!

• The fight is on! Assault deadly castles or battle in open plains.
• Includes all 19 fighters from Samurai Warriors and Samurai Warriors Xtreme Legends!
• Wide-screen action using the PSP (PlayStation Portable) system's full display!

• Flood a plain or trigger an avalanche‒use the Strategy map and "charms" to exploit new tactical opportunities!

• 22 new maps plus all-new stories created exclusively for the PSP system.

• Multiplayer Vs. challenges for up to 4 players.
• Over 200 sub-officers to unlock and recruit.
• Expanded Samurai history encyclopedia.

Source:

Back of Case - PSP (US)