Originally published January 2025. Updated October 2026.

Marvel's Avengers: Endgame marketing campaign built $2.798 billion in global box office on a foundation of controlled information release, fan-driven spoiler protection, and market-specific premiere events rather than a single global ad push. The campaign's defining discipline was restraint: trailers that withheld plot information while still raising emotional stakes, and a #DontSpoilTheEndgame movement that turned the audience itself into the campaign's enforcement mechanism.

How did Marvel build anticipation without spoilers?

Marvel's first Endgame teaser, released in December 2018, relied entirely on the emotional weight of the surviving Avengers after Infinity War rather than showing any new plot information. That restraint, withholding the story while still raising the emotional stakes, created more anticipation than a conventional action-forward trailer would have, because it forced audiences to speculate rather than simply consume a preview.

Social campaigns built on hashtags like #AvengersAssemble extended that same restraint into direct fan engagement, pairing exclusivity (limited plot information) with participation (fans sharing theories and reactions) in a way that kept the film trending continuously between the teaser and the release date. The rules behind that kind of sustained cadence are set out in the social media PR playbook.

How did the campaign adapt to international markets?

Marvel tailored its marketing by market rather than running one global campaign, partnering with local celebrities and influencers in China specifically to build regional buzz rather than relying on the US-led press cycle to translate automatically. Premiere events in major international cities were treated as individually newsworthy occasions, each generating its own local media coverage rather than functioning as a single global broadcast moment. The structure of those talent partnerships is the subject of celebrity marketing beyond star power, and 5W's events and celebrity PR practice covers premieres and talent appearances for brands.

How did Marvel maximize fan engagement?

The Marvel Studios: The First Ten Years exhibit gave long-time fans a nostalgia-driven touchpoint that reinforced a decade of continuity leading into the film, while limited-edition merchandise and early fan screenings created smaller, high-intensity moments of excitement ahead of the wide release. The #DontSpoilTheEndgame campaign is the clearest example of the strategy: Marvel asked fans to protect the experience for others, converting the audience into active participants in protecting the film's marketing asset (surprise) rather than passive viewers of a trailer.

How did Marvel manage spoiler risk and leaks?

Marvel's team controlled information release deliberately, limiting what reached press and public well ahead of the premiere, which reduced the surface area for leaks to begin with. When rumors or partial leaks did surface, the team's established pattern of staying firm on secrecy meant a leak read as an anomaly rather than a sign the studio had lost control of the story, which kept the leak from compounding into a larger crisis. Companies that want a written plan for the same situation can start from the crisis communication plan template.

What were the campaign's results?

Avengers: Endgame grossed over $2.798 billion globally, holding the record for highest-grossing film of all time until Avatar's 2021 re-release pushed past it. The marketing campaign's defining achievement was sustaining global anticipation across a multi-year narrative arc while protecting the plot from leaking before release, a balance most franchise marketing campaigns fail to strike at this scale.

Frequently asked questions

What made the Avengers: Endgame marketing campaign successful?

The campaign succeeded by withholding plot details while still raising emotional stakes in its trailers, tailoring premiere events and influencer partnerships to individual international markets, and converting fans into active participants in protecting the film from spoilers.

What was the #DontSpoilTheEndgame campaign?

A fan-facing social media campaign asking audiences to avoid posting spoilers after seeing the film, which built a sense of community around protecting the unspoiled experience for others and extended anticipation well past the premiere date.

How much did Avengers: Endgame gross globally?

The film grossed over $2.798 billion globally, making it the highest-grossing film of all time until Avatar's 2021 re-release surpassed it.

Ronn Torossian is the founder and chairman of 5W AI Communications, the AI Communications Firm. He is the publisher of Everything-PR and the author of two best-selling editions of For Immediate Release.