What If...? : episode ratings graphOverview Next episode Release date Best episodes Ratings graph Similar shows Cast THE TOP FIVE 01 7.9 WHAT IF... DOCTOR STRANGE LOS… S01E04 02 7.8 WHAT IF... ULTRON WON? S01E08 03 7.4 WHAT IF... THE WATCHER BROKE … S01E09 04 7.0 WHAT IF... ZOMBIES!? S01E05 05 7.0 WHAT IF... T'CHALLA BECAME A … S01E02 THE LOW WHAT IF... THE HULK F… · S03E01 SERIES AVG 6.3 BEST SEASON S1 SEASONS 3 S1 S2 S3 E1 E2 E3 E4 E5 E6 E7 E8 E9 S01E01 What If... Captain Carter Were the First Avenger? — 6.8 S01E01 6.8 S01E02 What If... T'Challa Became a Star-Lord? — 7.0 S01E02 7.0 S01E03 What If... The World Lost Its Mightiest Heroes? — 6.9 S01E03 6.9 S01E04 What If... Doctor Strange Lost His Heart Instead of His Hands? — 7.9 S01E04 7.9 S01E05 What If... Zombies!? — 7.0 S01E05 7.0 S01E06 What If... Killmonger Rescued Tony Stark? — 6.3 S01E06 6.3 S01E07 What If... Thor Were an Only Child? — 6.0 S01E07 6.0 S01E08 What If... Ultron Won? — 7.8 S01E08 7.8 S01E09 What If... The Watcher Broke His Oath? — 7.4 S01E09 7.4 S02E01 What If... Nebula Joined the Nova Corps? — 6.3 S02E01 6.3 S02E02 What If... Peter Quill Attacked Earth's Mightiest Heroes? — 6.4 S02E02 6.4 S02E03 What If... Happy Hogan Saved Christmas? — 5.8 S02E03 5.8 S02E04 What If... Iron Man Crashed Into the Grandmaster? — 6.6 S02E04 6.6 S02E05 What If... Captain Carter Fought the Hydra Stomper? — 6.5 S02E05 6.5 S02E06 What If... Kahhori Reshaped the World? — 6.3 S02E06 6.3 S02E07 What If... Hela Found the Ten Rings? — 6.8 S02E07 6.8 S02E08 What If... The Avengers Assembled in 1602? — 6.7 S02E08 6.7 S02E09 What If... Strange Supreme Intervened? — 6.6 S02E09 6.6 S03E01 What If... The Hulk Fought the Mech Avengers? — 4.9 S03E01 4.9 S03E02 What If... Agatha Went to Hollywood? — 4.9 S03E02 4.9 S03E03 What If... The Red Guardian Stopped the Winter Soldier? — 6.5 S03E03 6.5 S03E04 What If... Howard the Duck Got Hitched? — 4.9 S03E04 4.9 S03E05 What If... The Emergence Destroyed the Earth? — 5.3 S03E05 5.3 S03E06 What If... 1872? — 5.2 S03E06 5.2 S03E07 What If... The Watcher Disappeared? (1) — 5.5 S03E07 5.5 S03E08 What If... What If? (2) — 5.6 S03E08 5.6 AVG 7.0 6.4 5.4 RATING SCALE 5.5 7.5 9.5 LOWEST RATED HIGHEST RATED Episode ratings grid for What If...?: 26 rated episodes across 3 seasons, ratings 4.9–7.9. Peak: S01E04 What If... Doctor Strange Lost His Heart Instead of His Hands?, 7.9.