Astonishing X-Men: Ghost Boxes

"The Last Testament of Scott Summers" - In this world, Wolverine didn't take the lead in hunting Subject X, and the Ghost Box was opened. This reality was marked as a threat and a target, and the mutants were hunted and massacred.

"4" - The world has been hurt, and there are very few mutants left. Armor, Beast and Wolverine have had a rough time, but they're working their way across the country to meet Kitty Pryde's rescue team.