For all of you which don't understand this, up to
Gears of War,
Epic Games always included the Unreal Editor with the game. But now, the people of
People Can Fly rejected that, and not only the editor is not included with the game, all the codes and ways to access it are gone as well. Cue a huge
Internet Backdraft. It doesn't help that Epic themselves suggested using the Unreal Development Kit to create stuff, while the reason behind having a
Level Editor with the game is to create stuff for that particular game