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Game of Thrones Season 5? There’s no escape

Given that "Game of Thrones" is HBO's most successful ever show, it's no surprise the network is keen for no one to miss the show's upcoming fifth season.

In a move designed to capture audiences across the world, HBO announced Tuesday that it will simultaneously broadcast – or "simulcast" - the latest season across more than 170 countries and territories. The first episode will air at 9 p.m. ET on Sunday, April 12 – that's 3 a.m. in France and 10 a.m. in Tokyo.

Source: HBO

The following episodes will be released at the same time each subsequent week, which the Time Warner-owned network said will create "a global television event."

One country will have to deal with being inundated with spoilers, however.

Eager fans in the U.K. will have to wait until 9 p.m. GMT on Monday, April 13 to watch the latest episode on Sky Atlantic -- that's 19 hours later than most other countries.

"We know it's a 'watercooler' show so while we experimented with simulcasting the premiere episode of season 4, we plan to premiere each new episode of S5 at 9 p.m. GMT on Sky Atlantic in order to encourage U.K. fans to watch, enjoy and discuss their favourite show together," a spokesperson for the channel told CNBC via email.

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Why the world domination?

The move to simultaneously broadcast episodes is thought to be driven by concerns over piracy.

For three consecutive years, "Game of Thrones" has been the most illegally downloaded show, according to data gathered by TorrentFreak, an online news source.

It also holds the crown for the most pirated single episode of 2014, with an estimated 8.1 million illegal downloads of season four's finale -- almost double that of the episode in second place, from "The Walking Dead."

Apple and HBO reach streaming deal

News of the simulcast came just days after for a new streaming service called "HBO Now." Available onApple devices for three months, the streaming service is set to be launched in April, just in time for the hit show's fifth season.

In a press release, Michael Lombardo, president of HBO Programming, said the new season was going to be "great."

"We are thrilled to see our international partners jumping on board to bring Game of Thrones, one of the most universally loved television shows in the world, to global audiences at the same time it airs on HBO in the U.S.," Lombardo said.