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THQ unveiled a demo of UFC Undisputed 2010 for members of the media yesterday in Las Vegas to show off a number of new features and enhancements in this year’s edition. GameSpot.com and IGN.com both have reports with their impressions and a ton of details on what’s new and what to expect. Here’s a quick rundown.

• Full cage support
• A fighter’s position on the cage can affect striking power
• Cage can be used to help or defend from takedowns
• Twice the number of available submissions from 2009
• Ability to transition from one submission attempt to another
• Quarter and half-circle analog stick transitions used on the ground last year will be used in the clinch
• Sway system in the clinch used to deliver more powerful strikes or avoid them
• Positions on the ground will have sub-positions
• A knockout blow can be delivered from any position in the game
• When in mount the player won’t have to manually block a transition attempt from opponent
• T-shirts, hats and other gear to unlock
• The “Buffer 180″ is in the game
• New refs including Yves Lavigne
• Some kind of trash talking feature in career mode that “will gain you more popularity and will also negatively affect relationships”
• No more static animations, fighters always moving, clinch reanimated, fight animations quadrupled
• Karate, Greco-Roman Wrestling and Sambo fighting styles added
• Created fighters not limited to two fighting styles, will have individual move sets
• 100+ fighters on the roster, none made from create-a-fighter mode like 50% of last year’s roster
• “Game Is Watching You” system, which will “track every action and use this information to dictate in-game commentary, opponent intelligence and overall career progression”
• Title Mode: fight through a weight class to earn and defend a belt
• Title Defense Mode: complete milestone challenges on your road to stardom
• Tournament Mode: 16-player individual and team
• Fight camps in career mode where you can go to learn new moves
• Analog stick rolling method to escape submissions is back, button mashing/brute force is gone
• Ability to fight orthodox, southpaw, or switch and assign a dominate power hand
• Drag-and-drop system for placing sponsorships and tattoos, no more extensive menu navigation
• No more maxed out created fighters online
• Online fight camps and leagues with ability to train and learn new moves with friends

More details will be revealed as the game approaches the release date, May 25. New footage may be shown during tonight’s UFC 109 broadcast.

More UFC Undisputed 2010 images at IGN.com