From We Got This Covered:
'When I first sat down to play, a pause menu greeted me with the chance to retry a horde mode round that someone else had been playing. I hit retry and immediately saw a host of new improvements made to the game. One new thing Gears of War 3 brings to the table is a command centre styled gameplay structure for horde. What this means is that the humans are able to create their own home base with different traps, devices and solidified positions. It adds a lot to the experience and makes it something much more fleshed out.'