The Call of Duty website has details on a newly announced preorder bonus for Call of Duty: Ghosts, saying those who buy the military shooter before it's released will receive Free Fall, a bonus map to offer a multiplayer battlefield exclusively populated by preorder customers. Here's word on how this will show off the game's dynamic environments:

Fans around the world that pre-order the game at participating retailers will receive the Free Fall downloadable bonus map that features the new dynamic map event mechanic, included with their copy of the game at launch. Free Fall ushers in the first details on how players will encounter the changing environments in the leading multiplayer experience on consoles.

As an example of just one of Call of Duty: Ghosts' new dynamic map events, Free Fall drops players into a shattered skyscraper on the brink of collapse. Sideways staircases climb into the night sky, elevator shafts run along the ground, and what were once windows now form a terrifying glass floor, hundreds of feet above the city streets. Free Fall's close-quarters combat and frenetic action are then thrown into overdrive as the ruined skyscraper continues to fall throughout the match. With every drop, the accompanying shockwaves cause further destruction, disrupting sightlines and constantly evolving paths and chokepoints as the map changes in real-time.

"Dynamic map events change the way players approach the game, and Free Fall does a great job illustrating this new mechanic," said Mark Rubin, executive producer at Infinity Ward. "As the match progresses, the geometry of the world continues to change and players need to adjust on the fly or else. It's a really fun new feature that adds layers of strategy and constantly evolving gameplay options for players. And this is just one of the many new approaches we're putting into Ghosts' multiplayer across the board. There's so much more that we look forward to sharing in the weeks to come."