Is X-Men: First Class scary?

Only a little. X-Men: First Class has a few tense moments, nothing that follows you to bed.

How gory is X-Men: First Class?

Light gore and strong violence.

What is X-Men: First Class rated, and is it OK for kids?

It is rated PG-13, with some strong language and strong violence. Your call for older kids.

X-Men: First Class (2011)

Film · 2h 12m · Rated PG-13

Action, Adventure, Sci-Fi

Young mutants discover their powers, forging a complex friendship while battling a world-ending threat with brisk, gritty action.

Epic and suspenseful. A party watch at a brisk pace. Emotionally it is heavy.

Streaming on Disney+ and Max.

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X-Men: First Class parents guide

It stays inside its PG-13, with some innuendo or implied sex and some strong language.

Our estimate: fine from about 13. Rated PG-13.

Scare: Mildly scary; A few tense or eerie moments.
Jump scares: None noted
Gore: Light gore; Some blood or injury, briefly.
Violence: Strong violence; Violence is frequent or intense.
Sex and nudity: Mild; Mild means innuendo, or sex implied off screen, with no nudity.
Language: Moderate; Some strong profanity, a few f-words.

How we rate: an AI reads what is known about each title and tags it 0 to 3; we check the tags against a hand-rated set and correct them by hand when readers tell us. Estimates, not a scene-by-scene review. Spot a mistake? Tell us.

Three questions

Is X-Men: First Class scary?: Only a little. X-Men: First Class has a few tense moments, nothing that follows you to bed.
How gory is X-Men: First Class?: Light gore and strong violence.
What is X-Men: First Class rated, and is it OK for kids?: It is rated PG-13, with some strong language and strong violence. Your call for older kids.

What is X-Men: First Class about?

Before Charles Xavier and Erik Lensherr took the names Professor X and Magneto, they were two young men discovering their powers for the first time. Before they were arch-enemies, they were closest of friends, working together with other mutants (some familiar, some new), to stop the greatest threat the world has ever known.

Does it have a happy ending? (spoiler-safe)

Bittersweet. It earns its ending, but not everyone gets what they want.