Microsoft shows a trailer for Call of Duty: Black Ops 2.

The story features the American president being transported by the Black Ops team amid some kind of apocalyptic futuristic drone attack.

"Get the president down there while I provide cover fire!," etc.

Dance Central 3 is shown by developers Harmonix - Usher appears on stage to show how the moves for his new single go, which presumably you'll be able to do in the game.

“Dance Central 3” (Harmonix Music Systems Inc., Microsoft Studios). The bestselling dance game series on Kinect returns this fall with “Dance Central 3.” It features dance hits from today and also sends players back in time to the ’70s, ’80s, ’90s and ’00s — hitting the dance floor to learn classic dances like “The Hustle,” “Electric Boogie” and “The Dougie.” Premier music video game developer Harmonix keeps the dance party going with a new multiplayer party mode for up to eight players and the hottest, most diverse soundtrack yet. Featuring Usher, Daft Punk, Gloria Gaynor, 50 Cent and many more, “Dance Central 3” is sure to get any dance party started.

A new South Park game 'Stick of Truth' - billed as the 'next South Park Adventure - is trailed.

Trey Parker and Matt Stone - creators of South Park - come out to announce the game.

After making fun of SmartGlass they discuss the game, and their ambition of making the game look like the show. Which is "kinda crappy", they say.

“South Park: The Stick of Truth.” Written and voiced by Trey Parker and Matt Stone, “The Stick of Truth” is the most epic South Park experience to date. Earn your place alongside Stan, Kyle, Kenny and Cartman, and aid them in a hysterical adventure to save South Park as only fourth-graders can. Recruit classic South Park characters to your cause, such as Professor Chaos or Jesus, armed with a machine gun. Arm yourself to the teeth with an arsenal of magical weapons and mystical armor to defeat crab people, underpants gnomes, hippies and other forces of evil. Succeed and you shall be South Park’s savior, cementing your social status in South Park Elementary. Fail, and you will forever be known … as a loser.

A new Xbox Live game 'Wrecketeer'- which looks like a medieval version of Worms crossed with Angry Birds controlled by Kinect - is trailed. Doesn't look that amazing - but it's out this summer.

“Wreckateer” uses Kinect to put you in control of a massive castle-wrecking ballista. With the help of Wreck and Tinker, travel the land and destroy 60 goblin-infested castles using six magical projectiles. Aim and fire each shot and then control it in mid-air, motion-activating special powers and guiding them toward their target. Utilise an arsenal of Flying, Explosive, Splitting and rocketing Speed shots to explore the infinite ways you can wreak havoc with “Wreckateer”’s fully dynamic destruction.

Capcom is up to show off gameplay from Resident Evil 6.

It looks very cinematic, but as with many of these gameplay trailers it's hard to tell where the game begins and the CG cut scenes end.

The trailer concludes with our hero kicking a zombie off his leg while clambering onto a helicopter in flight.

Oh and then the copter crashes. Into a train. And then a building. Later some desks, and an advertising board. Finally, it crashes into the ground.

Phil Spencer is back on stage to announce three 'World Premier Exclusives'.

Ascend: New Gods - a fantasy-themed fighting action game.

Signal Studios, the developers behind the hit franchise “Toy Soldiers,” is pleased to announce its new action role-playing game (RPG), “Ascend: New Gods.” Enter the world as Caos, a gigantic breed of mighty warriors created to serve the will of the Gods. Combat the immortal Titans while fending off attacks from rival players and establishing your influence in the global Ascend conflict. Epic three-scale combat takes place across immense landscapes and limitless dungeons. “Ascend: New Gods” offers unprecedented connectivity across mobile and console Xbox LIVE platforms. Wage war against Xbox 360 players from your mobile phone, gain power and prestige, and transfer it all to your console — anywhere, anytime.

LocoCycle - a game featuring a cyborg motorbike named Iris.

Presenting I.R.I.S.: Two-time Valedictorian of the illustrious Big Arms Academy’s School of Assassination. I.R.I.S. is proficient in more than 40 forms of unarmed combat, earning Sensei status in Jiu-jitsu, Aikido, Krav Maga and Jeet Kune Do. She is equally deadly with blades, handguns and the latest in nuclear technology. Fluent in more than 50 languages and virtually every local custom, I.R.I.S. can blend in and disappear at a moment’s notice in any country around the world. She was the first female cadet to break the four-minute mile — by three minutes and forty seconds. All this won’t even run down her batteries. Twisted Pixel Games proudly presents “Lococycle.” Today’s criminal requires tomorrow’s hero.

Matter - a new game for Kinect apparently (?) based in the Tron universe.

Experience a hero’s journey across a mysterious and visually stunning world. “Matter” brings the unique vision of Academy Award-winning director Gore Verbinski exclusively to Xbox 360 and Kinect.

A new gameplay video is shown for the upcoming reboot of Tomb Raider.

In it Lara attacks a few bad guys, falls into a river, lands inside a crashed plane, parachutes through a forest and lands outside - yes - a big old tomb.

It's busy stuff, and it looks good. If you missed the recent trailer check it out below.

The first DLC for Tomb Raider will be exclusive to Xbox 360, it is announced.

It is announced Xbox games will be brought to Windows 8 - though it's not clear exactly what that means.

SmartGlass will also be heading to PCs.

Using Kinect voice control Microsoft is promising to make the web usable on a TV even though "keyboards don't belong in the living room".

You'll be able to use your phone as a pointer, as well as watch videos in HD.

This will launch in autumn 2013.

Xbox announces Smartglass, a way to combine phones and tablets and your TV - including iOS and Android devices - to make them all more interesting.

One example sees your tablet (Windows 8) showing you info about a movie when you watch it on your Xbox.

When you watch Game of Thrones on TV, for instance, your tablet will show you additional information about the show.

When you play Madden on your Xbox you'll be able to select plays on your tablet, and Halo will use your other devices to show weapons information, lets you select multiplayer matches and other useful stuff.

Microsoft will also use SmartGlass to put the web on your TV - by adding Internet Explorer to Xbox.

Nike are announcing a new partnership with Microsoft and Xbox to create "the most personalised digital training" yet available.

It will combine with your other devices - your phone and a Nike+ band for instance - and connect you to a global training community.

Your phone will nag you when it's time for a workout, Nike says - which sounds, well, annoying. But could be kind of cool depending on how it all works together.

Microsoft announces Xbox music.

Featuring over 30m music tracks, Microsoft says it will allow you to listen to 'Your Music, Your Way.

It will be available on Xbox 360, Windows 8 PCs tablets and phones.

Few details are given about exactly how it works - but some kind of streaming system is clearly coming.

Some new features for Xbox entertainment are being trailed - including advanced voice search via Bing to find movies, TV shows and other content.

It's not the most amazing stuff, but cool if you find searching on Bing a real chore.

The Mexican version of this stuff is also shown. It's fairly impressive, as far as it goes.

Some new content partners are also announced - Nickelodeon, Machinima and Paramount Movies.

Microsoft announces the NBA and the NHL are coming to Xbox - nice for American fans. A trailer is shown of those American fans high-fiving. As they do.

After a brief trailer for Fable: The Journey (out late 2012), Phil Spencer says this will be the biggest year yet for Xbox 360 games.

“Fable: The Journey” offers a whole new way to experience the deep storyline and picturesque world of Albion that fans have come to know and love. Set 50 years after the events of “Fable III,” players are asked to come to the aid of the mysterious Theresa, who thrusts you into an action-packed adventure full of dangerous enemies, hair-raising chases and humourous characters. Built from the ground up for Kinect, “Fable: The Journey” gives you the power to wield magic as a deadly weapon, defend yourself in combat and solve puzzles on your journey to becoming a hero. The game will launch on 12 Oct. 2012 in EMEA, and 9 Oct. in North America, South America, Asia and Australia.

Spencer then introduces the trailer for the new Gears Of War game (Gears of War: Judgement).

It's brief and shows no gameplay.

“Gears of War: Judgment” takes you back before the events of the original “Gears of War” trilogy to the immediate aftermath of Emergence Day — the defining event of the “Gears of War” universe. Follow Kilo Squad, led by Damon Baird and Augustus “The Cole Train” Cole, as they fight to save the city of Halvo Bay from an unstoppable enemy in the most intense “Gears” game yet. “Gears of War: Judgment” introduces a variety of new multiplayer experiences, including OverRun, a thrilling new class-based competitive mode that will pit Locust and COG soldiers in a head-to-head battle unlike anything “Gears” fans have experienced yet. “Gears of War: Judgment” will launch worldwide in early 2013.

Following that is a trailer for a new racing game - Forza Horizon - which shows lots of muscle cars on roads with lots of traffic. Again, hard to tell if it's gameplay. Anyway it's out October 23.

Combining the legendary “Forza Motorsport” authenticity with a festival atmosphere and the freedom of the open road, “Forza Horizon” is a high-intensity, action-racing game set against the backdrop of the world’s most unique motorsport party. Featuring an expansive landscape, daring driving maneuvers to master, a rousing soundtrack and visceral moment-to-moment gameplay, “Forza Horizon” offers an immersive pick-up-and-play experience while retaining the unrivaled realism, diversity and innovation that are hallmarks of the “Forza Motorsport” franchise.

Andrew Wilson, head of EA Sports, is onstage to announce that Madden and FIFA will gain Kinect features in 2013.

On Fifa, Wilson shows how Kinect voice commands can be used to substitute players and switch formation.

It is also explained your reaction to the ref's decisions can affect both the commentary and your fortunes on the pitch.

“FIFA 2013.” “FIFA 2013” captures all the drama and unpredictability of real-world football. This year, the game creates a true battle for possession across the entire pitch, and delivers freedom and creativity in attack. Driven by five game-changing innovations that revolutionise artificial intelligence, dribbling, ball control and physical play, “FIFA 2013” represents the largest and deepest feature set in the history of the franchise.

As for Madden - American football to the uninitiated - is one of the biggest-ever investments in the franchise.

Madden NFL 2013” is all-new, from boot-up to credits. Every mode, every screen, every pixel has been reinvented, delivering the most innovative, connected and authentic “Madden NFL 2013” experience in franchise history.

Hall of Fame quarterback Joe Montana is onstage to announce the game - and test it out!

The Kinect features include play calling, including calling commands to individual players, audibles, and other NFL-related whatnot.

"This brings back a lot of memories," Montana says, somewhat oddly.

Microsoft is showing a gameplay demo of the next Splinter Cell game - Splinter Cell Blacklist.

It is explained the USP of the game is killing quickly and smoothly, and picking targets before a previous attack has ended. Lots of slow-mo and bullet-time basically.

Shipping Spring 2013.

Don Mattrick appears on stage to say that Xbox gaming will be coming to phones, PCs and Tablets.

He adds that Xbox 360 is now the world's best-selling console.

The Halo 4 gameplay demo concluded with the words 'an Ancient Evil Awakes'.

Microsoft has opened its keynote with a trailer for Halo 4.

“Halo 4” marks the return of Master Chief and the beginning of a new saga in the blockbuster franchise that has shaped entertainment history. E3 2012 marks the worldwide premiere of “Halo Infinity Multiplayer,” including the all-new, story-driven experience known as Spartan Ops. A first of its kind, Spartan Ops is an episodic adventure — playable in single-player or cooperatively with up to four players — that blends immersive storytelling, high-quality cinematics and action-packed gameplay to deliver an unprecedented serialised experience. Spartan Ops will extend the “Halo 4” experience well beyond the game’s launch. “Halo 4” hits store shelves on 6 Nov. 2012, delivering its most epic and explorative campaign yet, together with groundbreaking multiplayer action.

An intro showcasing a 'civilian' ship crashlanding on an alien planet is followed by a gameplay demo of the new game.

Screenshots below.

The live video stream from Microsoft's keynote is now live - though don't expect it to be up without serious traffic issues for very long...

Watch it (while reading along at HuffPost) here.

Check back at 5.15pm for the latest news from the Microsoft press event at E3 2012.