Gun Showdown is a free roaming action-adventure that expands the untamed West by challenging players to shoot, knife and dynamite their way through an epic story with new wireless multiplayer and quick-play modes, missions, and gameplay features unique to PSP. Work both sides of the law as a gunslinger doling out vengeance as you showdown against corrupt lawmen, a murderous preacher, a renegade army psychopath, and merciless outlaws.

Cheat mode:
Select the "Profile" option at the main menu. Then, select "Name" and enter one of the following codes to activate the corresponding cheat function. A sound will confirm correct code entry.

Jenny:
Enter ALLIES as a profile name.

Bonus deathmatch level:
Enter BADLANDS as a profile name.

Faster firing:
Enter QUIVIRA as a profile name.

Increased ammunition capacity:
Enter CAMPBELL as a profile name.

Almost all Story mode weapons:
Enter NEDWHITE as a profile name. Note: The final weapon still remain locked.

Unlimited Story mode ammunition:
Enter BARTON

All Quick Play mode chapters unlocked:
Enter HUNTER as a profile name.

Quick Play challenges:
Get the indicated number of points in the indicated Quick Play challenge to unlock the listed challenge.
Bear Hunt: 60 or more points in Suppress The Outlaws
Fire Fight: 35 or more points in Bear Hunt
Hold The Fort: 125 or more points in Quail Hunt
Hollister's Dynamite Run: 7 or more points in Fire Fight
Suppress The Outlaws: 75 or more points in Hold The Fort

Character skins:
Get the indicated number of points in the indicated Quick Play challenge to unlock the corresponding character skin.
Dodge Whore: 10 points in Fire Fight
Hollister Thug 1: 150 or more points in Quail Hunt
Hollister Thug 2: 100 or more points in Hold The Fort
Port: Score 100 or more points in Suppress The Outlaws
Red Hand Thug: 40 or more points in Bear Hunt
Rude: 50 or more points in Hollister's Dynamite Run

First person mode:
Face Colton's back to a wall and whistle for your horse. The game will go into first person mode.