Half-Life is a critically acclaimed first-person shooter video game developed by Sierra and released in 1998. It has won more than 50 Game of the Year awards from publications around the world, and was named 'Best PC Game Ever' in PC Gamer's November 1999 issue. Half-Life combines great storytelling with intense action and advanced technology to create an immersive experience for players. Set in a frighteningly realistic world, Half-Life requires players to think strategically if they want to survive its challenges and ultimately achieve success.

South Park Let's Go Tower Defense Play is an Xbox Live Arcade game where players take control of Stan, Kyle, Kenny, Cartman and other South Park characters to save the town from trouble. The action/strategy game combines snowball-throwing with tower defense strategy for players of all skill levels. As you progress through the story-based campaign or challenge levels on Xbox LIVE there are unlockable special content and characters to collect in your scrapbook. You can also team up with up to four local players for even more fun!

New Rally-X is the sequel to classic arcade game Rally-X, released in 1981. It has been updated with improved graphics and background music, as well as new courses and adjustments to enemy cars for better game balance. Players must still collect all flags while avoiding enemy cars but there are new features such as the Lucky Flag which will give you points depending on your remaining fuel. The Special Flag allows players to double their points from all remaining flags when collected.

Might & Magic X: Legacy is a turn-based first person role playing game (RPG) set in the wake of spectacular events from Might & Magic Heroes VI. Players control a party of four adventurers entangled in the political machinations surrounding Karthal, a city on the verge of secession. Through exploration and combat, players must battle powerful mythical creatures to complete unique quests and make their way through dangerous dungeons, cities and labyrinths full of traps. Players will collect ancient magical treasures as they attempt to determine Karthal's fate. A classic RPG experience with old school rules combined with new gameplay systems for an exciting adventure awaits!

Braid is a 2-D puzzle-platformer game developed for the Xbox Live Arcade. You play as the protagonist, tasked with rescuing an abducted princess by travelling through various worlds and solving puzzles. The unique twist of this game is that time can be manipulated in strange ways; you have special powers to rewind, create parallel universes, set up pockets of dilated time and more which are used to solve each puzzle. The gameplay is challenging but not punishing - death or loss cannot occur - and every puzzle introduces something new about the world. Braid's main focus is on valuing your time and attention; there are no filler elements present in this game so every moment spent playing it will reward you with something meaningful.

The Elder Scrolls IV: Shivering Isles is an Xbox Live Arcade game that allows players to explore a new plane of Oblivion, the realm of Sheogorath, the Daedric Prince of Madness. Players can continue playing with their existing save games or create a new character to explore this content-rich world. The two sides of Sheogorath's madness – Mania and Dementia - are filled with vast dungeons, creatures like Flesh Atronachs and Grummites, and all new items including spells and ingredients. Players have access to talented craftsmen who can forge unique armor and weapons for them throughout their adventure. With more than 30 hours of gameplay available, The Elder Scrolls IV: Shivering Isles offers both veteran adventurers as well as newcomers an exciting challenge in defending its inhabitants from destruction amidst paranoia and despair.

In Far Cry 3, players take on the role of Jason Brody, a lone individual stranded on an unknown tropical island. In this lawless world filled with violence and chaos, players control how their own story goes by choosing which battles to fight and who to befriend or oppose. Players must explore every inch of the island as they slash, sneak, explode and shoot their way through enemies in order to survive in this place that has forgotten what is right from wrong.

Metal Slug 3 is an action shooting video game for Xbox Live. The main characters are Marco, Tarma, Eri and Fio from the Sparrows Unit who must prevent General Morden from creating a New World Order. There are multiple routes to choose from and players have access to various metal slugs for help in battle. Enemies vary depending on which route is taken and the classic arcade graphics are faithfully reproduced for maximum gaming enjoyment.

SoulCalibur is a weapons-based fighting video game released for the Sega Dreamcast. It features stunning graphics, a variety of amazing fighters, and spectacular combos that will leave players in awe. The story follows the tale of souls and swords transcending time and history to become an epic battle that will last throughout eternity. Players can pick from a selection of characters with their own unique movesets as they strive to be the ultimate champion. With its fast-paced combat system and incredible visuals, SoulCalibur is sure to provide hours upon hours of entertainment for gamers around the world.

Contra is a classic action video game developed by Konami in 1987. Players take on the role of two commandos, Lance and Bill, tasked with infiltrating the base of Red Falcon organization to prevent them from conquering Earth. As they progress through 8 stages set in the jungle, players are armed with a machine gun and can capture upgraded weapons such as Fireball, Laser, Rapid Fire gun or Spread Gun to defeat enemies along their way. Ultimately it is up to Lance and Bill to save the world from Red Falcon’s plans for global domination.

Alan Wake is a psychological action thriller, set in an idyllic all-American small town and its surrounding areas in the state of Washington. The protagonist, Alan Wake, is a bestselling horror writer who must confront his own nightmares come to life. Remedy Entertainment's focus on story and atmosphere are fundamental elements of the game design which allows players to explore an open world environment. There is also a mission based structure with light being used as a significant gameplay element that was created through proprietary new technology for high definition visuals.

Max Payne 3 is a critically acclaimed video game that follows its titular character through an expansive single-player campaign. It also introduces the first thorough multiplayer experience in the series. This unique twist dynamically alters maps and mode progression for all players in a match, with traditional multiplayer modes included. Additionally, Max Payne 3 has a deep reward and leveling system, persistent clans, and strategic load-out options to make it even more enjoyable.

The Chronicles of Riddick: Assault on Dark Athena is a video game package that combines 2004's award-winning Escape from Butcher Bay experience with new high definition enhancements. Additionally, this package includes the Dark Athena chapter, an expansion that introduces players to a new story and gameplay features. Players will not only be challenged to survive in Butcher Bay but also engage in intense multi-player combat for the first time in the Riddick universe. The menacing Merc-ship Dark Athena awaits helpless prey as players take action against Captain Revas and her army of slaves turned controllable combat drones throughout death-defying events and battles of malice and gore.

The Dishwasher: Dead Samurai is a 2-D stylistic action platformer for Xbox LIVE Arcade that offers fast, intense gameplay and a unique visual style. Players take on the role of an undead samurai dishwasher who is seeking revenge against an evil cyborg army. The game allows players to use ancient blades, machinery and magical powers to defeat hordes of zombies, cyborgs and robots. Players can compete with others around the world in speed run or high score challenges. Gameplay features combo-intensive combat set in a 2-D blood-soaked environment which emphasizes speed, vertical movement and maneuverability. The game also has new modes where players can use guitar peripherals for electric death solos or to rip through enemies with headstocks using motion control technology. Created by one person without any professional experience in just 1 ½ years using XNA power, this game is sure to appeal to gamers looking for something different!

Marble Blast Ultra is the latest installment of the classic Marble Blast series, and it's suitable for players of any age. The game has you navigating your marble through a futuristic "astrolab" arena suspended in the clouds, with moving platforms and dangerous hazards to avoid while collecting gems and power-ups to help you complete each course quickly. You can also compete against other players online with Xbox Live's ultra blast multiplayer mode.

Owlboy is a vertical platform adventure video game set in the sky. The story takes place after a great calamity has spread apart many of the world's islands. Players take control of Otus, one of the last remaining owls and part of a race known for their great wonders. In order to save his people, Otus must embark on an epic quest that will test his courage and determination as he faces numerous enemies and obstacles along the way.

Ultimate Mortal Kombat 3 is an action-packed fighting video game available on Xbox Live Arcade. Players can choose from 22 fighters, each with their own motives and goal of destroying Shao Kahn. The game includes classic 2-on-2 kombat mode, as well as a variety of multiplayer modes including the new Challenger Versus Mode for up to 4 players in a winner-stays-on tournament format. There are 12 achievements that offer rewards for both novice and expert players, along with detailed leaderboards to track wins and losses over time. Additionally, there is a large selection of environments including Scorpion's Lair, Jade's Desert, Kahn's Kave and more. Ultimate Mortal Kombat 3 provides hours of entertainment at 800 Microsoft Points worldwide.

Final Fight: Double Impact is a classic arcade game from Capcom, now available on the Playstation Network. It includes two games in one - Final Fight and Magic Sword - with new music by remixologists, HD-filtered graphics, and online/local co-op multiplayer. There are also plenty of unlockable secrets to discover, as well as an integrated online leaderboard so you can show off your skills!

Counter-Strike: Source is a popular video game from Valve that uses the Source engine. It has recreated maps from Counter-Strike 1.6, such as Office, Havana, Italy, Aztec, Chateau and more with new textures and improved buildings and scenery. Objects in these levels react realistically to the physics engine of the Source engine. The game can be downloaded through Valve's Steam service with Half-Life 2 included in the package.

Castle Crashers is an award-winning video game developed by the independent developer The Behemoth, best known for creating Alien Hominid HD. This medieval-style game provides players with plenty of insanity as they battle their way through waves of enemies and bosses in order to save four princesses from the clutches of a wizard. The silly characters, vibrant visuals, and cooperative play make Castle Crashers an enjoyable experience for all types of gamers.

Uno Rush is an exciting and easy-to-learn party game for up to four people on Xbox Live Arcade. Players can sort their cards, even when it's not their turn, in order to play them sequentially when it's their turn. The first player who gets rid of all their cards wins the round and scores points based on the remaining cards in opponents' hands. This fast-paced family friendly game includes full avatar, LIVE Party Chat, Xbox LIVE Vision camera, and Big Button Pad support as well as multiplayer action with up to four players per console over Xbox LIVE. Special command cards affect different aspects of the game such as skipping turns or reversing direction of play. Uno Rush offers a fun experience that will keep you playing for hours!

The Unfinished Swan is an enchanting video game that challenges players to explore the unknown. Players take on the role of a young boy who follows a mysterious swan into a surreal kingdom where everything appears unfinished. The world begins as a blank, white space which can only be revealed by splattering paint around it. This creative and imaginative concept creates an unforgettable experience for gamers of all ages.

Golden Axe is an action video game released for Xbox Live Arcade. Players take on the role of one of three characters - a powerful fighter, a female Amazon, or a mighty dwarf - as they battle against the evil Death Adder and his henchmen. The game features enhanced graphics and sound to relive classic arcade moments, along with two high score leaderboards (one for Normal and one for Hardcore play). Multiplayer capability allows up to two players to join in on the fun, while twelve new achievements are included to master.

Far Cry 4 is an open world action-adventure video game set in the fictional country of Kyrat, located in the Himalayas. Players take on the role of Ajay Ghale, a native of Kyrat who has returned to fulfill his mother's dying wish and spread her ashes. The player is soon caught up in a rebellion against Pagan Min, a figure known for both his charisma and brutality. In Far Cry 4 players will explore the treacherous landscape of Kyrat while grappling cliffs or launching into free fall with their wing suit. They will have access to unique weaponry that allows them to play however they choose, whether it be sniping, sneaking or all-out assault. Animals can be helpful allies or dangerous adversaries as they traverse this beautiful yet unpredictable land.

Speedball 2: Brutal Deluxe is an ultra-violent sports game set in the year 2326. A deadly dispute between rival gangs has led to the creation of Speedball, a fast-paced and brutal sport that quickly becomes popular nationwide. The Bitmap Brothers and Empire Interactive bring this legendary futuristic sports game to Xbox Live Arcade with remastered classic 2-D graphics or super enhanced high definition 3-D visuals. Players can compete solo or against others locally or online in 4 leagues, cup and knockout competitions, team enhancements, management & training options as well as ranked preset or career games. With 32 teams available for selection, Speedball 2: Brutal Deluxe offers intense action that will keep players coming back for more!

Raskulls is a puzzle platform game available for download on Xbox Live Arcade. Players take control of one of 8 different Raskulls, each with their own unique personality and abilities. The goal is to race across multiple levels while solving puzzles and collecting coins. Along the way, players can also compete in minigames such as King of the Hill or Sumo Smackdown against friends online or locally. With colorful visuals, an upbeat soundtrack, and plenty of challenges to keep you occupied, Raskuls offers hours of entertainment for gamers both young and old.

Command & Conquer: Red Alert 3 is a real-time strategy (RTS) game that introduces a fully cooperative campaign and brings back the series' lighthearted style and classic, action-oriented gameplay. In the alternate timeline of Red Alert 3, World War III is being fought between three factions - the Soviets, Allies and Empire of the Rising Sun - with armies utilizing wacky weapons such as Tesla coils, heavily armed War Blimps, teleportation devices, armoured bears and transforming tanks. The Soviet Union has gone back in time to try to restore its glory by changing history but instead creates an alternative timeline where technology has evolved differently; creating new powers like Japan's Empire of the Rising Sun. Through this imaginative vision of an alternate future full of possibilities Electronic Arts asks "What if?" What if all those research projects over 70 years had paid off? What if Soviet Union survived? And what would happen if Japan's empire never fell?

In Crysis Warhead, players take on the role of Sergeant Sykes, or 'Psycho', a memorable character from the original game. Psycho's Nanosuit is just as capable and he has an even bigger arsenal of customizable weapons and vehicles. Players experience Psycho's parallel story during the events of the original game and find that life on the other side of the island is intense and explosive. Along with this new single player campaign, there are also new multiplayer content to enjoy!

Jetpac Refuelled is an updated version of the classic 1983 laser-driven arcade game. The game has 100 levels for players to build and refuel their rockets while fighting off enemies, all in a bid to stay alive and get rich. Jetpac Refuelled also offers multiplayer action both on one console or over Xbox Live as well as global high score Leaderboards and Achievements. For nostalgia purposes, there is also a recreation of the original 1983 version included under Retro mode. Players can download the Trial version from Xbox Live Arcade if they're unsure about purchasing it.

Spore is a video game created by Will Wright, which takes players on an epic journey from the origin and evolution of life to the deepest reaches of outer space. Players start off as simple microbes in the Tidepool phase, learning how to survive while they evolve their creature with tools and abilities. They then progress through Tribal, City, Civilization and Space phases where they learn how to form tribes, build cities and civilizations, explore other planets and galaxies. Throughout each phase players can choose between different paths of peace or war as they strive for global unification. Along the way creatures will meet others evolved by other players that are shared over SPORE's central servers. All progress is tracked in a Sporepedia which captures all creatures met on this intergalactic adventure.

Assassin's Creed Unity is a video game set during the French Revolution. Players take on the role of Arno, a young man determined to uncover and expose the real powers behind the Revolution. Along his journey, he will become a Master Assassin and experience firsthand the violence and chaos of this tumultuous period in history. Missions include taking part in historic events such as the Siege of Bastille and killing King Louis XVI. The game provides an immersive and realistic portrayal of life during one of Europe's most turbulent times.

In Alien Hominid, the player takes on the role of an alien whose UFO has crash landed and is being pursued by the FBI. The objective of the game is to defeat as many FBI agents and other enemies as possible in order to escape with your spaceship intact. With a variety of weapons at your disposal, you must use strategy and quick reflexes to outwit your pursuers and make it back home safely!

Far Cry 2 is a first-person shooter video game set in war-torn Africa. The player takes on the role of a mercenary sent to take out The Jackal, a mysterious character who has reignited conflict between rival factions and put thousands of lives at risk. To complete their mission, they must use cunning and brute force to overcome their enemies' superior numbers and firepower. Features such as real-time story telling, systemic auto-healing, minimal in-game interface create an intense atmosphere where the player feels truly alone against barbarian warlords. A wide range of weapons are available for players to make their way through levels including machine guns, machetes, sniper rifles and flamethrowers.

CellFactor: Psychokinetic Wars is a first-person shooter game where you must choose between technology and humanity. You have the ability to manipulate your environment and use either firearms or telekinetic superpowers to take out enemies. You can fly, teleport and sprint at accelerated speeds for different ways of attacking your foes. There are four multiplayer modes (Death Match, Capture the Flag, Team Death Match, Assault) as well as 30 single player challenges with 10 for each character. The seven unique environments contain objects that can be used against opponents such as pipes ripped from walls or rocks thrown in any direction. Weapons include pistols, sniper rifles, shotguns and rocket launchers while powers include telekinesis (to summon objects from environment), lightning rods/energy beams which kill in one shot plus invisible mode on radar among other abilities. As you progress rewards become available which consist of faster stamina regeneration, increased fire power etc.. Lastly customize your character's armor with color schemes of your choosing!

Pac-Man Championship Edition 2 is the latest installment in the Pac-Man Championship Edition series, and it brings a new level of excitement to next-generation consoles and PC. It takes the best aspects from both Championship Edition and DX and combines them into one modernized game. Featuring 3D graphics, funky visuals, and all the classic elements of chomping through mazes that made Pac-Man so iconic, this new version puts an exciting spin on a timeless classic.

Robotron: 2084 is a classic action-packed video game available on Xbox Live Arcade. Set in the year 2084, humanity has created super-advanced cyborgs called Robotrons who have decided that the inefficient human race must be exterminated. The player takes control of a single family of clones, and must use their skills to battle wave after wave of robotic enemies known as Grunts, Brains, Enforcers and Tanks while avoiding indestructible Hulks at all costs. If successful they can rescue Mommy, Daddy and Mikey before it's too late and save mankind from destruction!

The Settlers: Paths to a Kingdom is the latest game in the award-winning kingdom building strategy series created in 1993. With over 500,000 units sold in the US and 7MM worldwide LTD, it has become one of the best selling strategy brands. The game features richer military, economic and research systems than ever before which allows players to play their way and win. In addition to its campaign mode and fully customizable pre-designed maps, downloadable expansions as well as player-generated content offer endless experiences for gamers. Even more innovative features such as integration with social networks like Facebook and Twitter make this title truly accessible for all types of players.

Boom Boom Rocket is a fast-paced rhythm game developed for Xbox Live Arcade. Players must time their explosions to the beat of ten original tracks created by Ian Livingstone while travelling through a 3D cityscape, with more spectacular fireworks effects as they better match the timing of each explosion. The game features three modes - Normal, Speed and Multiplayer Head-to-Head - each song being choreographed at varying skill levels so that everyone can join in on the fun. Players can unlock new firework designs by mastering each track as well as fill up bonus meters to activate psychedelic bonus modes for extra points. Additionally, players can connect online and compare their scores with other players on leaderboards.

Gravity Ghost is an action-adventure game that features physics-based gameplay with a twist. Players take control of a character as they run, jump, and soar around various planets in the galaxy. By using gravity to glide through the air, players can explore a shattered galaxy and rescue its survivors while also unlocking powerups and mysterious terraforming powers along the way.

The Maw is an action/adventure video game from Xbox Live Arcade. It follows the story of Frank, a hero whose best friend is a fat blob called Maw who has the ability to absorb traits from anything he eats and grow to unlimited size. In order for them both to escape their current situation, they must work together as they eat their way to freedom. The game was honored with the Audience Choice Award at the 2008 PAX-10 showcase of independent games and is also a finalist in this year's Independent Games Festival for Technical Excellence by Twisted Pixel.

Elements of Destruction is an Xbox Live Arcade game in which you take on the role of a master of disaster, using powerful natural forces to exact revenge against your former employer. You have access to tornadoes, lightning, earthquakes and other destructive powers that can be used to cause destruction throughout various locations around the world. You must use these forces in clever ways to shake down buildings with earthquakes, suck up and throw objects with tornadoes, and strike down aircraft with lightning. There are two multiplayer modes available: Destruction (go head-to-head with another player) and Cooperative (work together with others). In either mode, your ultimate goal is to destroy the corporate menace once and for all.

Bionic Commando Rearmed 2 is a video game in which Nathan Spencer uses his trademark bionic grappling hook to navigate through new environments. He must face off against gun-toting soldiers and mechanized threats. The visuals have been improved compared to the original, with more detailed character models, textures and vibrant colors. Additionally, new player mechanics add another layer of strategy to the platforming experience while an updated bionic arm offers a more dynamic experience for players.

Xevious, released in 1982 by Namco, is an iconic vertical scrolling shooter now available on Xbox Live Arcade. Players control the Solvalou ship and destroy Xevious forces with blasters against air-based enemies and bombs against ground-based targets. Destroying the Andor Genesis mothership earns bonus points. The game revolutionized shooting games when it was released due to its unique enemies, variety of scrolling environments, great background music, and many hidden gameplay features. Now players can enjoy this classic arcade experience in single player high definition old-school action on Xbox Live Arcade.

Lost Cities is an award-winning card game that has been brought to life on Xbox Live Arcade. Players must draw from a pool of cards and devise the best strategies in order to gain the most points and outwit their opponents. The original card game's fun and strategy have been faithfully translated for console players, making it easy to learn within minutes. Through this game, players manage prosperous expeditions through exotic locales such as the Himalayas, Egypt, and Brazilian rain forest. Players can also compete with up to three other friends over Xbox Live or Sierra Online.