Saddle your horses and get ready to ride, Activision, Inc.'s (Nasdaq: ATVI) GUNâ„¢ Showdown for the PSP (PlayStationPortable) system has shipped to retailers nationwide. A free roaming action-adventure, GUN Showdown expands the untamed West by allowing players to work both sides of the law as a gunslinger who must shoot, knife and dynamite his way through an epic story with new wireless multiplayer and Quickplay modes, exclusive missions, and gameplay features unique to the PSP system.

"GUN Showdown lets players experience the renegade nature and gritty lawlessness of the West all in the palm of their hands," said Will Kassoy, senior vice president of global brand management. "With pick up and play action and all-new wireless multiplayer functionality, GUN Showdown adds to all of the great elements of the original console game and delivers the ultimate in PSP system action."

In GUN Showdown gamers dole out vengeance as they face-off against corrupt lawmen, a murderous preacher, a renegade army psychopath, and merciless outlaws. In a world where greed, lust and murder reign, players wage war on horseback, hold up banks, collect bounties on prisoners dead or alive, and commandeer trains as the lines between good and evil are drawn in blood.

Extending the GUN console experience, GUN Showdown delivers five new missions that expand upon the rich story as well as deliver new gameplay mechanics, characters, and weapons and a host of Quickplay modes. Gamers can also team up or go head-to-head in Showdown mode which includes Deathmatch, Golden Cross and Texas Hold'Em poker gameplay modes via the PSP system's wireless network capabilities.

GUN Showdown will soon be available for the PSP (PlayStationPortable) system, for a suggested retail price of $39.99 and is rated "M" ("Mature" – Blood and Gore, Intense Violence, Sexual Themes, Strong Language and Use of Alcohol) by the ESRB.