Interest in learning Korean has spiked since the launch of hit Netflix show "Squid Game," tutoring services reported, underscoring a growing global obsession with South Korean culture from entertainment to beauty products.

Language learning app Duolingo Inc. said the nine-part thriller, in which cash-strapped contestants play deadly childhood games in a bid to win 45.6 billion won ($38.19 million), had spurred both beginners and existing students hoping to improve their skills.

Duolingo reported a 76% rise in new users signing up to learn Korean in Britain and 40% in the United States over the two weeks following the show's premiere.