1:45 p.m.:Battlefield 4 demo begins with an intense battle inside a ship, part of which rips off. It looks intense, as most Battlefield games do. One scene shows a firefight abruptly ended by a grounded fighter jet sliding into enemies.

1:43 p.m.: And we get our first look at Battlefield 4, with absolutely no audio. "I guess you may see it later," says a rep from studio DICE.

Then they start again with full audio. Lots of applause.

1:41 p.m.: John Mamais of CD Projekt Red appears to unveil The Witcher 3: Wild Hunt, an open world role-playing game that will feature "hundreds of hours of gameplay."

These Xbox One games shown so far look spectacular. The background detail and activity happening is really impressive. Also, with all these open world titles, I wonder whether this means far fewer loading screens.

1:37 p.m.: Action continues with the player pummeling a group of zombies with a Sledge Saw, a combination sledgehammer and saw, before mowing more down with a car. After approaching the center of a city through a destroyed train car, the player calls in an air strike. Fantastic finish. Dead Rising 3 launches this holiday.

1:35 p.m.: As with Ryse, lots of background activity in Dead Rising 3. Zombies are everywhere, as the player seeks a quick escape. The player jumps on top of a police car surrounded by zombies. It appears incredibly chaotic.

1:32 p.m.: Whitten also says Microsoft will drop the Xbox points system in favor of local currency. We move to an audio-free demo of the game Crimson Dragon, from the creator of Sega classic Panzer Dragoon. The cackling from the crowd made up for the lack of audio.

Up next is Capcom, who announces Dead Rising 3, an open-world zombie adventure.

1:29 p.m.: Whitten says video streaming service Twitch will be built in to Xbox One, allowing players to easily stream game footage from their device.

1:27 p.m.: Marc Whitten breaking down how Xbox Live will evolve on the One, starting with SmartGlass and a demo of Ryse. Players can view timelines or buy related items such as downloads.

Shifting to brawler Killer Instinct, using the Smart Match feature based on their skills. After the fight concludes, they switch to Upload Studio to automatically create and share clips with friends. Seems to record while playing with little involvement.

1:23 p.m.: Spark is very reminiscent of PlayStation series LittleBigPlanet, where players can create and share game experiences. Give it one week before someone re-creates the first level from Super Mario Bros.

1:21 p.m.: The demo features the creation of a rock character and village that is eventually attacked by a group of goblins. It looks easy, but there's no indication of how quickly they're creating this stuff.

1:20 p.m.: The development in Spark is done either through voice or SmartGlass, fine tuning details of a mountain with the tablet by adding a moat and bridge.

1:18 p.m.: After a very brief and mysterious taste of action title D4, Dave McCarthy of Microsoft Game Studios appears to discuss Project Spark, a title "that turns making a game into a game itself."

1:16 p.m.: Studio Remedy, makers of Alan Wake, up next to reveal Quantum Break, which we got a taste of during last month's Xbox One reveal.

Two people rush into a building, where a scene has seemingly been frozen in time. One of them calmly walks in, shards of glass surrounding him to grab a woman launched in the air from a blast. He pulls the woman out, but the rest of the scene remains frozen briefly before feeling the full impact of the blast. Very interesting.

1:12 p.m.: Phil Harrison of Xbox is up next, chatting about independent game development, and some of the games players can expect on Xbox One.

We start with MineCraft, a massive hit for PC and Xbox 360. The Xbox One version will boast bigger worlds and improved multiplayer.

1:08 p.m.: Dan Greenawalt of Forza creators Turn 10 says the intelligence of racers not controller by a human player will be smarter, and tailor their decisions based on how the player races.

"The new generation is about capturing the details that make our world human and real," he says.

1:06 p.m.: An orange McLaren rises from the left side of the stage, covered in smoke, an appropriate intro for racing title Forza Motorsport 5.

1:05 p.m.: The next surprise: Killer Instinct, the classic fighting game that will return as an Xbox One exclusive.

Following a brief trailer, Insomniac Games Ted Price breaks down Sunset Overdrive, another console exclusive. Insomniac is an interesting choice, based on their long PlayStation history with games such as Ratchet & Clank and Resistance.

1:02 p.m.: The Ryse demo concludes with the soldiers storming the city, having ravaged a town off the beach. It will be an Xbox One exclusive, available at launch. Cevat Yerli of Crytek on stage, who says the game will star a Roman general commanding a legion of soldiers.

12:58 p.m.:Ryse starts with a group of Roman soldiers storming a beach from their ship. Bit of a 300 vibe with this game. The amount of activity happening in this scene is astonishing. That's where Xbox One will separate itself from the Xbox 360.

One mechanic that hasn't disappeared: the quick-time event. It's on display as a soldier battles a group of enemies using a sword and shield. The players then rallies a formation of soldiers, who hold up their shields to defend against archers, then strike back with spears.

12:55 p.m.: Our first Xbox One game is Ryse: Son of Rome, from Crysis creators Crytek. "There once was a shining city on the seven hills," says the narrator in an opening trailer. "A place of beauty and freedom. Then, freedom became corruption."

12:53 p.m.: Watching an incredible trailer for Dark Souls II, an open-world fantasy role-playing game that rewards patience. A lot of patience.

Phil Spencer up next to discuss what we've been wanting to hear about: Xbox One games.

12:51 p.m.:World of Tanks will launch this summer as a free-to-play title on the Xbox 360. It will also feature 15-on-15 team warfare.

Also coming to 360: a Pixar like game called Max the Curse of Brotherhood. It features Max trying to rescue his brother after he seemingly banishes him with a curse.

12:47 p.m.: Xbox 360 version of World of Tanks (originally for PC) coming to the Xbox 360 later this year. Watching a very explosive trailer. Lots of tanks blowing up. Victor Kislyi of Wargaming, creators of World of Tanks, sharing more details.

12:45 p.m.: Don Mattrick briefly thanks MGS creator Hideo Kojima before setting the stage for today's event. However, Mattrick starts with the Xbox 360. Microsoft's Yusuf Mehdi is up, to reveal an updated version of the console, which looks like a smaller, sleeker version of the original Xbox. It's available today. Mehdi also says Xbox Live members will receive two free game downloads per month up until the launch of One. Games available will include Assassin's Creed II and Halo 3.

12:41 p.m.: It is definitely an over-the-top trailer. Dramatic music, cinematic presentation. Can't expect less from a Metal Gear Solid reveal. There's also a new villain, Skull Face. Creative name. Lead character referred to as "Punished Snake: A fallen legend."

12:38 p.m.: We are under way with a trailer for the next Metal Gear Solid, from publisher Konami. Sounds like it will be based in Afghanistan. It features lead character Snake on horseback as he makes his way through an open desert. The game will be open world. He hides behind one side of the horse, an example of some of the game's stealth elements. The level of detail is striking, from tiny ridges along cliffs to bits of sand in a sandstorm.

12:35 p.m.: Slight delay here at Galen. Xbox event should start shortly.

12:27 p.m.: Announcer gave the "5 minutes to start" cue, followed by lots of clapping. Generally, seems to be a lot of buzz in the Galen Center.

Update at 12:12 p.m. ET: We've made our way inside and are awaiting the start of Microsoft's event in 20 minutes. Six massive flat screens sit at the front of a stage blanketed in black and green. Is a Green Lantern cameo coming?

For those near a TV, you can watch the event on Spike, as well as through the official Xbox website and Xbox Live. Also, Wi-Fi connections here are spotty, so we apologize in advance for any possible slowness.

Original story

We've heard lots of information (and some confusion) on what Microsoft's Xbox One can do, might do, and won't do. Now, it's time to hear about some games.

USA TODAY is at the Galen Center for Microsoft's E3 event and will post updates on this page starting at 12:30 p.m. ET.

Microsoft hosts its press conference to start the Electronic Entertainment Expo in Los Angeles, where it's expected we'll know more about the lineup of video games expected to arrive with the console.

The event might clear up concerns about several features, such as the role of pre-owned titles and how it will utilize an owner's Internet connection. Microsoft shared some details on these options in a series of posts last week.

To keep up with the latest from E3, visit e3.usatoday.com.

Follow Brett Molina on Twitter: @bam923.