After three years, Gibson, one of the exclusive partners of Activision's Guitar Hero franchise, claims the game infringes on one of its patents and has notified Activision. In 1999, Gibson filed a patent for technology simulating a live performance using a musical instrument, a 3D headset with stereo speakers, and a pre-recorded concert. Not wanting to sit by idly, Activision has filed a lawsuit asking the U.S. District Court for California to declare Gibson's patent invalid and to bar it from seeking damages.

Sins of a Solar Empire is a real-time space strategy title under development at Ironclad Games. Unfolding the fate of three unique factions, Sins of a Solar Empire is the first chapter in an epic science fiction saga. The v1.03 patch adds fixes and tweaks.

Rockstar is bringing its open-ended crime series to the next-gen consoles with Grand Theft Auto IV. While details on the game are still slim, we now know that the franchise returns to New York situated around the mysterious protagonist Nikolai.

S.T.A.L.K.E.R. provides players with dynamic gameplay of fast and tough combats, where you face intelligent enemies, wield a diversity of weapons, control machinery, in a team based story-driven single player game, and multiplayer with numerous modes.

Atari and Valve announced an agreement to bring a variety of PC games from the Atari catalog to Steam, starting with Act of War (and expansion), ArmA: Combat Operations, Death to Spies, Indigo Prophecy, RollerCoaster Tycoon 3 and plenty more ...

SCEA officially revealed Motorstorm 2, featuring 16 new multi-route tracks, head-to-head online for up to 16 players, and 4-player split-screen mode. MotorStorm 2 is moving from the rugged desert to a lush Pacific island with all of the vehicles familiar of the first game (ATVs, rally cars, buggies, motorbikes, race trucks, etc.), while adding a new monster truck class.

Set after the collapse of Japan's Ashikaga Shogunate, SW 2 chronicles the civil wars that consumed feudal Japan and the events that lead to the country's unification. While Samurai Warriors 2: XL is a standalone expansion on PS2, the extra content (missions & playable characters) will also be downloadable on Xbox Live for owners of the original.

Lock and Load! Wolf of the Battlefield: Commando 3 takes the no-holds-barred arcade spirit of its predecessors and crafts an all-new furious cooperative shooting adventure for the next generation!

Gran Turismo 5 Prologue will be available for download and on Blu-ray, sporting improved AI, and for the first time include multiplayer up to 16 cars, with integrated with online features, such as a profile editor and an online event calendar.

Ubisoft has quietly pushed back two of its major upcoming PC titles. Assassin's Creed, originally planned for release in March, is now scheduled for April 8, while the PC edition of Rainbow Six Vegas 2 will come on April 15, a few weeks after its console brethren, which are due next week (thanks FiringSquad). No particular reasons for the delays were given.

Tthe first of two downloadable content expansions for the open-world RPG Two Worlds has been released. This Tainted Blood expansion (600 MP) adds 4 co-op maps, 45 new quests, harder enemies, a new town featuring a Merchant and Gladiator’s district, with advanced trainers to learn new skills and try them against opponents.

Super Street Fighter II Turbo HD Remix makes its downloadable debut on the XBLA and PSN by utilizing the original game code, while creating a fresh upgraded experience with new artwork and high resolution 1080p graphics. In order to stress test the online capabilities, Capcom will bundle a beta with the Xbox Live Arcade release of Commandos 3, which will last for 8 weeks and let you play one stage as either Ken or Ryu.

Fluid Entertainment announced it has secured $3.2 million in Series A funding to develop its MMO that encourages kids to explore their creativity, initiative and imagination, within an ecologically themed narrative.

MLB 2K8 Fantasy All-Stars is an exciting new baseball title that will put fans into the action like never before, offering fans of all ages a wildly fun experience featuring starting lineups from all 30 MLB clubs, a variety of exhibition and tournament modes, All-Star training mini-games, along with fantasy-themed baseball stadiums.

Another day, another batch of games shipped to stores. Instead of giving them all their own posts, we grouped them, and so far there are announcements for:

• Seven Kingdoms: Conquest (PC)
• Insecticide (NDS)
• 
  We will update this throughout the day when new announcements become available. Read more for details ...

Ubisoft announced a special Legacy Edition for Tom Clancy’s Ghost Recon Advanced Warfighter 2, which will include the original game, and an additional disk containing all the GRAW 2 downloadable packs available on Xbox Live to date!

D3Publisher of America's Puzzle Quest: Galactrix, developed by Infinite Interactive, incorporates a powerful blend of casual and hardcore gameplay elements, similar to Puzzle Quest: Challenge of the Warlords, into an all-new futuristic, science-fiction setting.

Red Mile has signed the license to Frank Miller's Sin City graphic novels and comic books; signed Flint Dille, known for The Chronicles of Riddick, as designer/scriptwriting; and revealed Sin City: The Game will be powered by Epic's Unreal Engine 3. Sin City, currently scheduled for Christmas 2009, is being developed by Transmission Games, formerly known as IR Gurus, and since the Wii is one of the platforms, could they be the mystery developer porting the UE3?

Brash Entertainment announced a game development deal with Japan-based studio Game Republic, led by famed game producer Yoshiki Okamoto. The partners will collaborate on an unannounced game based on a popular Hollywood film, scheduled for 2010.

Warhammer Online: Age of Reckoning will bring Games Workshop's fantasy world to life in a way that will allow players to create characters destined for great deeds and glory on the field of battle.

Arcade Moon invites you to water world of speed boats and crazy races in Aquadelic GT! Join the Aquadelic league and race for glory and cold, hard cash across Russian canals, Greek port towns and Caribbean islands! This v1.2 patch fixes multiplayer issues, crashes and gameplay.

Paradox Interactive's 4X strategy game Lost Empire: Immortals is set in space featuring six playable races, each with their own compelling storyline who battle for domination of a vast empire.

Mario and all his much loved pals are planning to make a spectacular return in this definitive version of Mario Kart, providing the most action-packed, adrenaline-filled racing fun ever seen in the series. Players will have to master a host of 16 exciting new tracks in addition to 16 classic tracks from previous Mario Kart games.

Wacky Races: Crash & Dash is an action racing game like no other, with fun-filled environments, crazy cars and hilarious characters from the Hanna-Barbera cartoon TV series including several old favorites.

The Fighter Collection and the Eagle Dynamics development studio will release the new benchmark in PC air combat simulation in 2008 with the release of Digital Combat Simulator: Black Shark, a simulation of the Russian Ka-50 attack helicopter and will be the flagship title of the new DCS series.