I get an email every so often from the Playstation Underground with information on new games for the PSP. I thought I would share this month's with you. Click the Source links for more information, screenshots and video for some games
SOCOM U.S. Navy SEALs Tactical Strike 
Rated T for Teen due to Drug Reference and Violence
Genre: Action - Tactical
Publisher: SCEA
Release Date: 11/2007
Players: 1
Max. AdHoc players: 2-4
Max. Infrastructure players: 2-4
WiFi Compatible: Ad Hoc/Infrastructure
In the midst of rising instability, insurgents have abducted the U.S. ambassador. Sanctioned by the Panamanian government, America's elite fighting force has been deployed to rescue and extract the ambassador. Take control of an entire SEAL team and engage in real-time tactical combat, where you evaluate each situation, determine a plan of action, and then execute on your command.
* All-new SOCOM experience delivers a true combat simulation, where tactics determine the outcome of each encounter.
* Innovative, easy-to-use graphical interface lets you switch seamlessly between fireteam, sub-team elements and individual SEALs to view the action and issue commands.
* Enhanced artificial intelligence results in smarter, more formidable enemies that communicate with each other.
* Choose from nine international special forces units, each with unique weapons and loadouts.
* Tactical-action gameplay delivers a unique online multiplayer experience, featuring 2-4 player Ad Hoc and Infrastucture play with full headset support.
* Operate in highly-detailed environments, including urban, industrial and jungle terrains.
* Authentic special forces movements and tactics, refined with technical assistance by the U.S. Naval Special Warfare Command, makes this the most realistic SOCOM to date.
* Command Equity and Local Influence allows skills, weapons and gear upgrades.
Source Metal Gear Solid Portable Ops Plus 
Rated T for Teen due to Mild Suggestive Themes and Violence
Metal Gear Solid Portable Ops Plus
Mild Suggestive Themes
Violence
Genre: Action
Publisher: Konami
Release Date: 11/2007
Players: 1
Source Castlevania: The Dracula X Chronicles 
Rated T for Teen due to Blood and Gore,Mild Suggestive Themes and Violence
Genre: Action
Publisher: Konami
Release Date: 10/2007
Players: 1
The legendary action game Castlevania: Rondo of Blood is reborn on the PSP® system with incredible 3D graphics and timeless side scrolling gameplay in Castlevania: The Dracula X Chronicles. The first time Rondo of Blood has been released outside of Japan, Castlevania: The Dracula X Chronicles lets gamers take up the Vampire Killer whip as Richter Belmont as they seek to destroy the maniacal Dracula once and for all in this pivotal piece of the ongoing Castlevania saga. Castlevania: The Dracula X Chronicles also includes unlockable versions of the original Rondo of Blood and Symphony of the Night games, delivering incredible gameplay and value while updating two of the most beloved video games of all time for a new generation of gamers.
* The classic action game Castlevania: Rondo of Blood re-imagined for the PSP® system with 3D graphics, enhanced gameplay and new music.
* Includes unlockable versions of the original Rondo of Blood and Symphony of the Night games, optimized for the PSP® system.
* Old-school side scrolling action through more than 10 gothic stages and additional hidden areas.
* New song collection system adds additional depth to classic gameplay.
* Complete special event to unlock an additional playable character.
* Return to previously completed levels to explore over and over.
Source Official Game Site Napoleon Dynamite 
Rated E10+ due to Cartoon Violence and Mild Language
Genre: Action
Publisher: Crave Entertainment
Release Date: 10/2007
Players: 1
Step into the moon boots of Napoleon Dynamite and relive some flippin sweet movie moments like dancing to Z-Kwon, throwing the pigskin a quarter mile with Uncle Rico, smashing piñatas with Pedro and many more! Napoleon Dynamite brings 30 mini games that really need you to use all your good skills to pass... even your bow-hunting skills for when you're hunting Wolverines with your uncle in Alaska! So hurry up and play already and all your wildest dreams will come true. Gosh!
Source Warriors of the Lost Empire 
Rated T for Teen due to Alcohol Reference,Blood and Violence
Genre: Action
Release Date: 12/2007
Players: 1
Warriors of the Lost Empire is an action RPG located in a fantasy land, built long ago by the great Emperor Hadrianus as a testament to his beautiful wife Antinos. But, when Hadrianus mysteriously locked himself in the temple, the city dwellers began to flee. The city became besieged by criminals and other worldly creatures, and now a special team of warriors have been tasked with investigating the lost city.
Source WWE Smackdown! vs Raw 2008 
Rated T for Teen due to Alcohol Reference,Blood,Mild Language and Suggestive Theme
Genre: Fighting - Wrestling
Publisher: THQ
Release Date: 11/2007
Players: 1
Max. AdHoc players: 2-4
WiFi Compatible: Ad Hoc
The following Legends are available exclusively on WWE SmackDown! vs. Raw 2008 for the PSP® system:
* Eddie Guerrero - Viva La Raza! Eddie Guerrero's legacy lives on as players can take control of this WWE Hall of Famer and former WWE Champion, known by millions of fans as "Latino Heat." But remember, if you're not cheating, you're not trying.
* Sgt. Slaughter - Listen up, you maggots! Sgt. Slaughter returns to the ring on the PSP® system so players can see firsthand why this WWE Hall of Famer and former WWE Champion is a real American hero. Just keep your eyes out for the Cobra Clutch!
* Jim Neidhart - Along with Bret Hart, Jim Neidhart formed one of the greatest tag teams of all time in The Hart Foundation. Now you can team up with "The Hit Man" once again to reclaim the World Tag Team Championship or tear through the competition with "The Anvil" on his own.
Source Medal of Honor Heroes 2 
Rated T for Teen due to Violence
Genre: Action
Publisher: Electronic Arts
System: PSP®
Release Date: 11/2007
Players: 1
Source The Golden Compass 
Rated E10+ due to Mild Language and Violence
Genre: Action
Publisher: Sega
Release Date: 11/2007
Players: 1
The Golden Compass promises to bring the beloved story to life through adventure and harrowing action sequences. As Lyra, players will evade dangers and traverse a magical landscape while uncovering the secret behind the disappearance of her friend and uncle; and as Iorek, the fearsome armored bear, players will smash through obstacles and enemies in order to protect Lyra along her way. Their travels will take them through a collection of unique locations, such as the port town Trollesund and a dark and foreboding research station in Bolvangar as well as areas not seen in the film.
Source