Decimation (comics)

"Decimation"
Decimation event logo, as shown on the covers of tie-in comics
Publisher	Marvel Comics
Publication date	January – August 2006
Genre	Superhero Crossover
Title(s) Decimation: House of M - The Day After Generation M #1–5 Mutopia X #5 New Avengers #16–20 New Excalibur #1–9 New X-Men #20–27 Sentinel Squad O*N*E #1–5 Son of M #1–6 Uncanny X-Men #466–474 Wolverine #36–40 X-Factor #1–4 X-Men #177–179 X-Men: Deadly Genesis #1–6 X-Men: The 198 #1–5 X-Men: The 198 Files X-Men Unlimited #13
Main character(s)	See lists below
X-Men - The Day After	ISBN 0-7851-1984-1
Generation M	ISBN 0-7851-1958-2
Son of M	ISBN 0-7851-1970-1
Sentinel Squad O*N*E	ISBN 0-7851-1997-3
X-Men - 198	ISBN 0-7851-1994-9

"Decimation" is a storyline published by Marvel Comics in 2005, spinning out of the events of the House of M limited series. The event started with a one-shot issue and took place in a number of various series all carrying the "Decimation" logo on the cover. The 2005 miniseries Generation M, Sentinel Squad O*N*E, X-Men: Deadly Genesis and X-Men: The 198 were all launched specifically for the "Decimation" storyline. The various stories were collected in five trade paper backs.

The storyline focuses on the ramifications of the Scarlet Witch stripping nearly all of the mutant population of their powers, thereby reducing a society of millions to one of scant hundreds. This event, which occurred on November 2 according to X-Men (vol. 2) #191, is known as "M-Day" in the Marvel Universe.

Reception among fans and critics was mixed, with a common complaint being the inconsistent manner in which mutants retained their powers while at times depicting "depowered" mutants as still having their physical mutations.