Titled 'The Queen's Justice,' the episode saw two of the HBO series' biggest characters - Jon Snow and Daenerys Targaryen - thrust together for the first time since it began.
The AMC zombie drama's mention arrived during an interaction between Snow (Kit Harington) and Tyrion Lannister (Peter Dinklage) after the former tried to warn those on Dragonstone of the impending war against the Night King and his army of White Walkers.
What the Game of Thrones cast look like out of character
Show all 44
Tyrion replies: “Why don’t you figure out what to do about my missing fleet and murdered allies, and I’ll figure out what to do about your walking dead men.”
No one was more surprised about the name-check than the official Walking Dead comic book Twitter page which responded to the moment.
Fans couldn't help but express their excitement upon noticing the reference.
As the battle for the Iron Throne intensifies, fans have been looking to past episodes for clues as to its outcome with one Reddit user noticing a crucial hint locked away in a season one encounter between Cersei Lannister (Lena Headey) and Robert Baratheon (Mark Addy).
Game of Thrones airs in the US on HBO every Sunday where it is simulcast in the UK on Sky Atlantic at 2am. It is repeated that same evening on both Sky Atlantic and NOW TV.
Follow Independent Culture on Facebook for all the latest on Film, TV, Music, and more.
Join our commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies
Join our commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies