Marvel Ruins from writer Warren Ellis and artists Terese Nielsen, Cliff Nielsen, and Chris Moeller has been shockingly controversial and incredibly dark. The comic concept presents Earth-9591, a reality where many of Marvel's famous events have led to misery, death, and destruction. It's a dystopian reality, which is explored through the point-of-view character, Daily Bugle journalist Phil Sheldon.
Source:https://www.cbr.com/marvel-ruins-best-darker-comics/