Chrome Hounds
The first unannounced video we witnessed featured a squad of mechs powering through a war-ravaged cityscape. The team faced off against a rival squad of mechanized war machines that burst from cover behind a set of buildings. One member of the original team sniped its enemies from afar with a long barreled cannon, hidden behind the façade of a bombed out structure. The machines were agile and on the smaller side for mechs. They weren't sky scraper crushing Steel Battalion type crafts, but rather about three or four stories tall with a large array of weapons.
 
The title is being produced by FromSoftware the same team that did Metalwolf Chaos and the Otogi series. The movie appeared to be a pre-rendered cinema and it was not announced which system it would appear on. However, considering FromSoftware's past development experience it would be a safe bet to say that this title will appear on the Xbox 360.
 
The next titles were part of a montage called SEGA's Next Level. It was announced that everything was running in real time, but not specified for any system. SEGA stated that their internal studios put together these demos to show their proficiency with the next generation hardware. This means that the videos may not point to definite titles. It is also feasible (and a lot more exciting) that these games are currently in development Xbox 360 and/or PS3.
 
Virtua Fighter
The first clip featured Akira from the Virtua Fighter series set against a white background. As he displayed his standard set of fighting moves the background filled in with a beautifully realized environment. Akira was wearing his traditional white outfit complete with a black belt, but the clothing was clearly separate from the body and moved realistically around him.
 
The next character shown was Sarah. She wore a reflective body suit that flaunted the power of the new hardware along with her excellent figure. She performed a series of kicks and spins, and closed out the segment by thanking the audience. The quality of the characters and environments were comparable with the DOA 4 characters and if this is only a technical demo then a fully realized Virtua Fighter game could be visually stunning.  

Afterburner
The small crowd cheered when the F-14 Tomcat burst onto the screen. The jet blasted over an ocean with beautiful reflections and small crests of water. Enemies appeared on the screen and the jet proceeded to let loose some heavy fire as it blew its rivals out of the air. The camera rotated around the action and zoomed in for a series of evasive maneuvers and barrel rolls. The demo looked like original After Burner, except with real jets and a hell of a lot faster. The real treat came when the scenery changed from the open ocean to a canyon. The sensation of speed was incredible as entire mountains zipped by in the blink of an eye.
 
House of the Dead
House of the Dead may not have translated to a very good movie, but it was a hell of a fun game. The screen panned in on a male and female agent as they entered a facility filled with the classic House of the Dead animated corpses. Each zombie had decomposing skin and a face and body that showed of every rotting muscle. The walking dead never looked so good.
 
The scene switched to a first person view as the two agents entered a glass hallway. On the other side of the transparent walls crowds of the dead tried to claw their way in. The camera moved over a balcony that looked out over hundreds and hundreds of creatures. The final scene showed a gigantic boss that clawed its way down a hall toward the camera until it finally grabbed the player in its mouth and launched it across the room.

Sonic the Hedgehog
A SEGA montage wouldn't be complete without everyone's favorite blue mascot. The final segment of the video displayed Sonic the Hedgehog running at full speed down a grassy path. The foliage surrounding Sonic was clearly next-gen material, but it was hard to tell at times because he was moving at an incredible rate. I'd like to imagine that Sonic was moving through a realistic version of Green Hill Zone.
 
Sonic reached the edge of a cliff and performed a swan dive down hundreds of feet into a canyon. Sonic entered a large open cavern with flowing water at the bottom. Sonic began tossing ring bubbles into the environment and golden rings bounced around the huge room. At this point the announcer restated that everything shown was in real-time and sonic hit a series of springs and shot into the sky. The camera then switched back to sonic running and as he blasted across a flat plateau, a massive airship appeared above him and dropped down a fleet of robots. The robots formed a circle around him and pummeled our hero with machine gun fire. Sonic fell to the ground, only to spring back up into the air, surrounded by emeralds and transformed into the all-powerful golden sonic. He performed a charged air attack that turned the bots into a pile of rubble.