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Mercury is an action puzzle game based on the movement and manipulation of the title metal. Players are challenged to "tilt" a three-dimensional game board in order to cause virtual blobs of liquid metal to roll around obstacles, across switches, and through gates, toward level objectives. The game was developed by the physics model specialists at Awesome Studios, known for creating the Archer MacLean brand of billiards simulations.

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Step back in time as you take the role of wheelman in Driver 76. Set in the '70s, two years before Driver: Parallel Lines, you must work your way through 27 missions divided into six plotlines as you explore New York City from Jersey to Coney Island. 76 features all the sights and sounds of a 1970s New York, and includes an authentic soundtrack with hits from that period of time. As you build your collection of cars, you can take on side jobs to upgrade the components of your vehicle or customize the paint job. Using a wireless connection, you can compete with friends in such multiplayer modes as "Street Racing," "Destruction Derby," "Pink Slip Racing," and "Swap Meet."

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Tormented Spartan warrior Kratos journeys to the underworld to battle mythological creatures in Chains of Olympus, the anticipated debut of Sony's blockbuster action series on PSP. The storyline in this original title precedes the events chronicled in 2005's God of War. As penance for past transgressions, the son of Zeus agrees to become an indentured servant to the Greek gods for ten years. When the world suddenly plunges into darkness and renders their powers useless, the gods beseech Kratos to return Olympus to its former glory. Kratos will journey to the Gates of Hades and beyond to fulfill his solemn obligation.

With a look and feel designed to replicate the same fast-action mechanics from the first two God of War titles on PlayStation 2, Chains of Olympus offers a few subtle changes to combat. Once again Kratos wields the Blades of Chaos, twin swords chained around his wrists, with each swing punctuated with light trails to enhance the theatrics of the combo-heavy fighting system. As players string together multiple hits, "vicious," "gory," and "savage" words of encouragement will appear. Enemies include Persian soldiers, Cyclopes, minotaurs, and the screen-enveloping boss encounters the series is known for. Defeating bosses allows Kratos to learn powerful new magic-based attacks.

Kratos can also parry blows and perform evasive dodges, with the latter now initiated with a button modifier due to the lack of a right analog stick. A new windmill-style move has been added for taking out multiple enemies, at the expense of leaving Kratos temporarily vulnerable to subsequent attacks. Also featured is a more dynamic camera system designed to show off the atmospheric stages without interfering with combat or the game's various action-oriented puzzles. Veteran character actor Linda Hunt reprises her role as the game's narrator. Chains of Olympus is independent developer Ready at Dawn's second PSP game after 2006's best-selling Daxter.

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Honor among thieves is a concept known in any culture, and no criminal organization can last without deep, unquestioning trust among its members. In Grand Theft Auto: Chinatown Wars, players discover a betrayal of that trust: corruption that runs to the core of a Triad crime syndicate. Most of the action in Grand Theft Auto: Chinatown Wars is viewed from an angled, top-down perspective on the city streets, more similar to the pre-GTA3 games in the series. Originally developed for the DS, the PSP version of Chinatown Wars features spruced-up graphics and an original soundtrack, and the former's stylus-based controls have been replaced by more traditional analog maneuvering. The driving sequences and mini-games remain however, once again representing iniquitous activities such as hotwiring cars, dealing drugs, and digging through debris for stashed goods. Fans will find the same open world, emergent adventure, violent action, pop-culture riffing, and dark humor that make the Grand Theft Auto series the most glorified and notorious of its time. What they won't find is a rehash of previous adventures with the likes of Tommy Vercetti or Niko Bellic. Forget it. It's Chinatown.

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Submit to the seedy streets of Vice City in this portable prequel to the top-selling PlayStation 2 game of 2002. British developer Rockstar Leeds revisits a familiar open-ended world while creating an original storyline with new missions and design elements. Lance Vance's brother Vic is the game's lead protagonist, and players will follow the ex-soldier in his bid for power and respect in 1984's corrupt, Miami-inspired metropolis.

The mission structure, controls, and perspective are similar to those introduced in 2005's Grand Theft Auto: Liberty City Stories, albeit with several notable enhancements. The draw distance has increased, allowing players to see more of their surroundings, the missions are more intricate, and the variety of vehicles has expanded. Players will zip through the narrow streets in various sports cars and motorcycles, take to the air in helicopters or jets, and bob along the water in speedboats or on jet skis.

One of the Grand Theft Auto franchise's distinguishing features is its high production values, and Vice City Stories showcases professional voice acting, cinematic cut-scenes, and radio stations rife with licensed music, satirical commercials, and quirky personalities. More than a dozen '80s era songs include such hits as Dio's "Holy Diver," Ratt's "Round and Round," and Pat Benatar's "We Belong." Multiplayer options offer a mix of cooperative and competitive games playable over an Ad-hoc wireless connection

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The first Grand Theft Auto game to hit the streets on PSP, Liberty City Stories follows in the tire tracks of the series' 2002 breakthrough hit. As in the PS2's Grand Theft Auto III, the three island boroughs of Liberty City are the setting for this portable game of violence, speed, and free-form criminality. Players take the role of a new character, however; another up-and-coming thug who follows a fresh underworld adventure to infamy, through a series of loosely related missions. Of course, as in the other contemporary GTA games, players are also free to explore the expansive, interactive game world on their own, participating in side-challenges or simply stirring up trouble however they see fit. Sprawling city streets are full of ineffectual police, cash-carrying pedestrians, and cars of a wide variety of fictional makes and models, all there for the taking. Also in line with series tradition, the game's soundtrack comes in the form of satirical radio stations which are available in any car, each featuring a long list of licensed music.

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Indeed a legend in her own time, Lara Croft leaps onto PSP in 2006 with a new look, a new game, and a new developer. Revamped physics and an enhanced control scheme allow for more free-flowing action, while graphical improvements present a redesigned Lara who is immediately expressive, more believably proportioned, and as strikingly attractive as ever.

Lady Croft's new look in Legend is based in part on 20-year-old British model Karima Adebibe. Lara now boasts smoother animations, a more realistic deportment, and a number of costume changes. The first Tomb Raider games were popular for their innovative blend of gaming styles as well as for their distinguished female lead, however, and this game is designed to return fans to the winning combination of 3D platforming, environmental puzzle-solving, and third-person shooting found in the blockbuster originals.

While the storyline of Tomb Raider: Legend is told around the series' traditional "tomb raiding" action, Lara must also adventure through modern city levels, proving her acrobatic skill set is as applicable to skyscrapers and cement as it is to unforgiving wilderness and ancient architecture. New equipment, such as the grappling hook and communication device, offer new abilities. A number of vehicles become available along the way, as well, for special gameplay sequences.

For the first time in the series, stalwart Eidos studio Crystal Dynamics (Gex, Legacy of Kain, Project: Snowblind) was developer of this Tomb Raider game, instead of the franchise's creator, Core. The designers at Crystal Dynamics have endeavored to apply their extensive experience in the 3D action genre toward reinvigorating one of gaming's most recognizable and beloved characters.

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Need for Speed: Carbon is ready to take you to the heart of underground racing. Set in a bustling east coast city, you begin the story by picking a tag and colors to use for identifying fellow gang members and territory. Picking your crew is important, and throughout the game you will have the opportunity to recruit 17 different characters. Group members come in three different classes -- brawler, assassin, and drafters -- and each of them have their own unique skill. Finally, your last task is to decide which of the 29 exotic, American muscle, or tuner cars you want to make your own.
The story takes you through 14 territories of such racing events as circuits, sprints, and lap knockouts against rival gangs. As you begin winning races, you earn territory within the city. Start losing races, and the territory is given back to the rival crew. To completely take over another group's turf, you must defeat their boss in a race. If you don't have time for the long version, you may jump into "Quickplay" or "Multiplayer" mode. Four person circuit races are available through an Ad-hoc connection. Need for Speed: Carbon includes personalization options that let you customize the color and overall look of your menu system, and a way to load MP3s into the game.

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To save a schoolgirl named Luna in Ratchet & Clank: Size Matters, single-players must take control of two characters and adventure through numerous environments in the "Story" mode. Assisting gamers through the game is a variety of gadgets, weapons, and armor. Gadgets include the Sprout-O-Matic and the Swingshot, while enemies are destroyed using such weapons as the Bee Mine glove and the Acid Bomb. Gamers can equip and swap armor to create different upgrades and effects. For example, equipping full sets of matching armor can envelope Ratchet's wrench or spread freezing crystals. In the multiplayer arena, gamers can play through both Ad-Hoc and Infrastructure connections, and there are several modes and hidden areas that feature multiplayer weapon upgrades. Players can go head-to-head in "Deathmatch" or cooperate in "Team Deathmatch" and "Capture the Flag." Additionally, a mode called "Iron Lombax" requires gamers to team up and complete objectives that include turning Martian cows into fast food. Players may accomplish this task by collecting the burger bound bovines honestly or by stealing them from your opponents.

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The PSP-exclusive release of Sonic Rivals finds Sega's iconic mascot in a high-speed footrace against friend and foe alike. Featuring side-scrolling action set within 3D environments, the game involves speeding across twisting, looping courses while grabbing helpful power-ups and avoiding deadly traps set by the notorious Dr. Eggman. Four playable characters include Sonic, Knuckles, Shadow, and Silver, each offering distinct storylines as players advance through 18 levels of one-on-one races and climactic boss fights. In addition to the main story, the game offers both a challenge and cup circuit option for solo players. The former has players trying to fulfill objectives on a choice of stages, while the latter is a best-of-three race on a series of courses. Each mode offers the chance to earn one of 150 collectible trading cards, which can be used to customize characters or wagered in Ad-hoc wireless races against a friend.

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Making its debut on the PSP, Tekken: Dark Resurrection features two returning characters (Lili and Dragunov), an Ad-hoc mode for up to eight players, the return of the Armor King, 19 stages, new modes, more than 30 customizable characters, and money to spend on costumes, armor, weaponry, and other items.

The game features four modes of play -- "Arcade Battle," "Team Battle," "Quick Battle," and "Story Battle" -- and multiplayer options include three attack modes. "Time Attack," "Survival," and "Gold Rush" pit player against player in a fight for supreme thumb skill supremacy.

As usual, a "Practice" mode gives gamers a chance to test their skills before entering the ring. "Story Battle" includes background information on each character as players fight for the title of "Tekken Lord" through a series of dojos based on a private island owned by Mishima Zaibatsu.

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Homer, Marge, Bart, and Lisa are the last hope for Springfield in The Simpsons Game for PSP. Featuring cartoon-like, cel-shaded graphics and 3D environments, The Simpsons Game offers players a chance to control each member of the flawed family (even baby Maggie) in a series of 16 "episodes" spread across four acts. Each episode parodies films, television shows, and particularly video games, with the latter skewering such mainstays as Grand Theft Auto, EverQuest, and the publisher's own Medal of Honor series. Two playable family members are featured in an episode, with solo gamers able to freely switch between the pre-selected pair to take advantage of a character's special attributes. Cooperative play with a friend is also supported throughout the animated adventure, which mixes elements of platform hopping, projectile firing, and puzzle solving.

Homer's abilities befit his slovenly persona: a belch of acrid gas and the power to transform into a blob to bounce or bowl over enemies. Bart fires a slingshot and transforms into Bartman, while Marge barks orders into a bullhorn and dons a policeman's cap for added strength. Lisa, on the other hand, disarms enemies with her sax and calls on the "hand of Buddha" to unleash various attacks. Each character can also activate special moves by filling up an energy meter or by finding power-ups. Character-specific collectibles are available as well, such as Duff bottle caps or Krusty coupons, which unlock one of two trophies per level. Players can even discover multiple video game clich�s, from double jumps to invisible walls, each narrated with particular disdain by Comic Book Guy. The Simpsons Game features a storyline crafted by the show's Emmy-winning writers and dialogue voiced by the original cast members.

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Based on the 2007 film, Transformers invites gamers into a world of mechanized shape-shifters called the Autobots and the Decepticons. By selecting an alliance, gamers will work their way through one of two campaigns and ultimately decide to defend Earth or watch it burn. As a robot, players experience combat in seven fully destructible environments as they attempt to complete objectives and missions including destroying drones. When gamers are in car form, they can compete in a variety of point-to-point races. Optimus Prime, Megatron, Starscream, and Ironhide make a return in the game, and players can shift from vehicle to robot on the fly. Content exclusive to the PSP includes 20 playable characters, an expanded storyline, Ad-hoc multiplayer action, and robot customization features.