Featuring table-turning game dynamics, updated graphics and vast waves of ferocious enemies, Galaga Legions was created by the same team that developed the Pac-Man Championship Edition for Xbox Live Arcade.

Geometry Wars: Retro Evolved 2 takes players on an all new adrenaline ride through six different action-packed gameplay modes, a new electrifying soundtrack and exhilarating local multiplayer modes in either versus or co-op for up to four players.

Tales of Vesperia combines real-time combat, captivating storylines and remarkable graphics while introducing original elements that set a new standard for role-playing gameplay and interactive storytelling. The demo features a full dungeon for, up to four, players to explore, packed with vicious enemies and highlighted by an encounter with a massive boss opponent.

Step into the world of Too Human, Silicon Knights' third-person epic action game. As the cybernetic god Baldur, players are thrust into the midst of an ongoing battle that threatens the existence of mankind. As promised, Microsoft has released a 1.09GB demo for Too Human on Xbox Live

Warlords offers single and multiplayer action as up to four players battle to protect their fortress from attack, while battering down their opponents’ at a frenetic pace!

Aces of the Galaxy is an old-school arcade thrill-ride, thrusting players into epic space battles in the ultimate struggle to survive. Players take control of the gun turret on an AI-driven spaceship aiming the reticule to vaporize waves of enemies in this third person retro-arcade shooter.

LEGO Indiana Jones: The Original Adventures is a tongue-in-cheek take on the first three cinematic adventures of pop culture's most iconic archaeologist, including Indiana Jones and the Raiders of the Lost Ark, the Temple of Doom and the Last Crusade.

In Top Spin 3, players compete online and offline to rise in the ranks against current top ranked professional players, as well as legendary players Boris Becker, Bjorn Borg and Monica Seles. Players can also use new player creator features that include free-form body sculpting, makeup and tattoos.

Word Puzzle is a brain-busting game that features intricate 3D boards, exploding word bombs and a whole host of synapse melting challenges and special effects. With five unique game modes, Live support for up to four players and Xbox Live Vision Camera support, Word Puzzle will keep you playing with friends and family for hours.

Don King Presents: Prizefighter is a documentary-style boxing game, featuring a documentary-style narrative career mode, training, and will require you to also manage personal relationships outside of the ring. This demo allows one or two players can battle it out in a three round bout held in Madison Square Garden between Joe Calzaghe and Luis Collazo.

NCAA Football 09 focuses on wide-open collegiate style gameplay featuring unique animations that you will only find in college football, unveiling the new Break Away Animation Engine which allows gamers to break in and out of moves.

Brain Challenge is an entertaining brain training program that helps players develop stress-management skills through a wide variety of games. A personal coach helps players develop their abilities in five areas of cognitive function, including logic, math, memory, visual thinking and concentration, in a fun and easy way.

Buku Sudoku takes the pen-and-paper puzzler high-tech with HD graphics, helpful tutorials, single- and multiplayer (including co-op) game modes, multiple grid sizes, and the option to display hints, highlight errors, undo moves, and solve 1,200 puzzles.

Re-imagined for an even more intense arcade shooter experience, Assault Heroes 2 expands its horizons into outer space, featuring hijackable enemy vehicles, many more levels and an enhanced co-operative gameplay mode.

D3 Publisher's Dark Sector, developer by Digital Extremes, thrusts players into the role of an elite black-ops agent sent on a dangerous mission into a decaying Eastern European city that hides a deadly Cold War secret. We almost forgot about it, but D3P has finally released a playable demo on Xbox Live.

No this is not a resurfacing of the Metal Gear Solid 4 rumor during its launch week, but according to Ripten the original 1998 Playstation One MGS title might be making its way to Xbox Live Arcade. Claiming to have seen a build on Microsoft's developers only partnernet we decided to have a look for ourselves and unfortunately did not find it, so either the rumor is false, or it was removed. With Soul Calibur and Bionic Commando get an XBLA makeover Metal Gear Solid wouldn't be that much of a stretch.

The war between the GDF and Strogg will soon be igniting on next-generation consoles as id Software and Activision confirmed that their team-based first person action title Enemy Territory: Quake Wars, is coming to next-gen platforms.

Microsoft has recruited id Software, Nerve Software, Splash Damage and Activision for its newest online offensive: Enemy Territory: Quake Wars Live Weekend 2008, a 72-hour play-and-win sweepstakes full of games and prizes beginning on Friday, June 6 at 12:01 a.m. EDT through Sunday, June 8 at 11:59 p.m. EDT.

Civilization Revolution delivers features like real-time interaction between leaders, multi-player capabilities and integrated video and voice chat, which transports the Civilization series to a level of gameplay that fans have never experienced before. This demo includes both single-player and multiplayer gameplay.

Ninja Gaiden 2 has players once again assuming the role of Ryu Hayabusa as they guide the ninja hero on a quest to avenge his clan and prevent the destruction of the human race. A demo is available on Xbox Live, except for North America and Canada, allowing you to try out about 30 mins of game, trying six different weapons, at the Acolyte difficulty setting.

TiQal is a new puzzle game where players demolish enemy block walls by matching squares of the same color and building them up to unleash combo points and power-ups.

NASCAR 09 will offer an authentic stock car driving experience for racing fans of all ages. Legendary NASCAR driver #24 Jeff Gordon will work you through an all-new interactive 3D menu interface, the game’s major features and advise you throughout your career. This demo lets you experience the New Sprint Driver Challenge or take on NASCAR's biggest stars at two of the game's 22 tracks.

YUKE'S announced that its new title Double D Dodgeball has received certification to release on Xbox Live Arcade, featuring a unique look and environment combined with intuitive controls and intense gameplay that fans of the classic playground sport will appreciate.

Even if trivia isn�t your thing, the first trivia and party game to hit Xbox Live Arcade is one in which players can win by making educated guesses, playing the odds or just knowing the interests of other players, whether they are local or online. Break out the Big Button Pad controllers or play couch vs. couch for a trivia party extravaganza.