What if... Nazis won World War 2. I think it's intereresting idea because the nexus event isn't from mcu. Imagine Captain America who wakes up in world ruled by nazis and he is trying to bring peace by working with what is left from Shield. Maybe Asgardians would help?

^So basically the MCU meets The Man in the High Castle?

That's Earth-X from DC

What if… Thanos won in Endgame?

What if… Steve Rogers was the Winter Soldier (the post-credit scene might set this up)

What If.. Thanos lost in Infinity War?

What if… Iron Man killed Bucky?

What if… Dreykov won?

What if...Thanos won again in endgame?

What if...Hela killed thor and took the throne?

What if...Thanos had never adopted Gamora or Nebula?

What if...Nebula beat Gamora in battle instead of the other way around?

What if...Youndu hadnt died?

What if...Starlord hadnt killed ego?

What if...Nebula did the snap in endgame?

Just a few ideas i had:

What If Iron Man Died in Afghanistan?

What If Iron Man was Killed by Iron Monger?

What If Iron Man was Killed by the Hammer?

What If Iron Man was Killed by Whiplash?

What If Iron Man was Accidentally Killed by Black Widow?

What If Loki Killed Iron Man in the Avengers?

What If Iron Man was Killed by the Chitauri?

What If Iron Man Actually was Blown Up by the Ten Rings?

What If Aldrich Killed Iron Man?

What If Iron Man was Shot at Some Point in Iron Man 3?

What If Iron Man was Killed by Ultron?

What If Iron Man Became Ultron and was Killed by the Avengers?

What If Iron Man Died in the Airport Battle?

What If Captain America Killed Iron Man in Civil War?

What If Baron Zemo Killed Iron Man?

What If Vulture Killed Iron Man?

What If Ebony Maw Killed Iron Man?

What If Thanos Killed Iron Man?

What If That Moon Crushed Iron Man?

What If Iron Man Died Experimenting Time Travel?

What If Iron Man Died Before Snapping?

What If Iron Man was Resurrected Just to Die Again?

What if Iron Man Never Existed?

What If Elon Musk was a competitor who Bought Stark Industries Causing Tony Stark to Go Into Depression and Die?

What If... Spider-Man didn't help Tony in Civil War?

What If... Gamora helped Thanos?

What If... Ultron was never created?

What If... The Missle hit New York?

@ནཡབཡོོི རཡིིབཡིིལཧ

That last one though

What If…Ego Married Meredith?

What If…Frigga Betrayed Odin?

What If…Ben & Jerry’s Never Found Out?

What if wenvu is killed and not his wife ?

What if eternals can intervene

What if malekith won ? ( two episode final of the season 2 )

What if hydra win in winter soldier ?

What if the guardians of the galaxy are evil ?

What if peggy took steve's place on the plane at the end of first avenger?