By Megan McCluskey
March 31, 2016

Not even the cast of Game of Thrones can remember the names of everything in Westeros.

Several of the HBO drama’s actors seemed to have a tougher time than expected while playing a recent game of “Game of Thrones Sword or ’80s Metal Band.” A video released on Thursday shows Lena Headey (Cersei Lannister) and Sophie Turner (Sansa Stark) as the standouts of the group — with Turner going the extra mile to identify who owned certain sabers — while Iwan Rheon (Ramsay Bolton), John Bradley (Samwell Tarly) and Michiel Huisman (Daario Naharis) struggled with their answers.

Read More: Watch the New Game of Thrones Season 6 Trailer

The quiz was part of an ongoing promotion to raise money for the International Rescue Committee, an organization that “responds to the world’s worst humanitarian crises by restoring safety, health, education, economic wellbeing, and power to people whose lives have been devastated by conflict and disaster.” Those who donate will have a chance to join the cast at the G.o.T. season 6 premiere and after-party in Los Angeles.

Game of Thrones returns April 24th on HBO.

Write to Megan McCluskey at megan.mccluskey@time.com.

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