Game of Thrones at 15: How HBO Is Steering the Franchise Into New Territory

Fifteen years after its 2011 debut, Game of Thrones—based on George R.R. Martin’s novels—has evolved from a cult-hit into a global franchise. While the original series’ final season faced criticism, HBO has successfully launched two spin-offs—House of the Dragon and A Knight of the Seven Kingdoms—that feature new casts, showrunners, and tones, demonstrating a shift toward fresh storytelling rather than reliance on legacy characters.

Radio Times

HBO is extending the franchise into animation and theatre. The animated series 9 Voyages remains in development, while the stage play The Mad King will open in July at the Royal Shakespeare Company. Recent releases include House of the Dragon season 1 (2022), A Knight of the Seven Kingdoms (2023), and the upcoming House of the Dragon season 3 in June. Animation targets younger viewers—about 50 % of Gen Z regularly watch anime—whereas stage adaptations have shown strong returns, exemplified by Stranger Things: The First Shadow’s $2,510,948 weekly gross and Harry Potter and the Cursed Child’s $1 billion global earnings. The Marvel Cinematic Universe’s recent box-office slump, highlighted by The Marvels as its lowest-grossing entry, illustrates the franchise-fatigue risk HBO seeks to sidestep.

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Industry observers warn that releasing too many titles in rapid succession can erode audience interest, a pattern seen in other franchises. Critics also caution that reviving original characters—such as a shelved Jon Snow sequel or an Arya Stark spin-off—could be perceived as a “desperate money-grab” that undermines the franchise’s commitment to new stories.

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HBO CEO Casey Bloys said the franchise’s popularity invites speculation about every development, but stressed the need to experiment without over-committing. He emphasized that HBO must give itself the flexibility to test multiple concepts before green-lighting a full series.

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• “I think one of the challenges with a show or a franchise that’s as popular as Game of Thrones is kind of anything we develop will get speculated about, talked about, and some people will think it’s an actual show,” — Casey Bloys, CEO, HBO

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• “You really just have to give yourself that ability to try a lot of different things without committing to a show. That process of development works for us.” — Casey Bloys, CEO, HBO

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By branching into animation and live theatre, HBO aims to keep the brand culturally relevant while reaching younger demographics and avoiding the oversaturation that has plagued other franchises. The strategy seeks to preserve the series’ legacy without relying on legacy characters.

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House of the Dragon season 3 arrives in June, The Mad King opens in July, and 9 Voyages continues development. These projects will test whether the franchise can sustain audience interest through varied formats while staying true to its core world.

Radio Times