Maisie Williams crashes 'Game of Thrones' Season 6 viewing party

LOS ANGELES, April 25 (UPI) -- Maisie Williams spent her Sunday night crashing a fan's Game of Thrones viewing party during the show's Season 6 premiere.

The actress who portrays Arya Stark on the hit HBO fantasy series documented the entire event on Instagram sharing with her over 2 million followers how she surprised the lucky fans visiting them at their home with snacks in hand.

Williams selected the group after asking on Twitter for fans to share their viewing party with her for a special surprise. "Earlier today I put this out to everyone on Twitter...I wanted to find some unsuspecting fans and surprise them with drinks and snacks before the premiere episode tonight..." she wrote on Instagram featuring the Twitter post.

After selecting UCLA film students, couple Mark and Kate, Williams purchased snacks for their viewing party. "We saw (on Twitter) that Mark and Kate had already made Game of Thrones themed snacks, and decorated their apartment, but who doesn't love extra popcorn and crisps?" she noted alongside a photo of herself purchasing bags of chips and popcorn.

Once she arrived, Williams was greeted at the door by a surprised Mark. The two quickly devised a plan to have the star walk in after he would proclaim to the rest of his party that they had won the Twitter contest. As Williams followed behind him, the rest of the party goers were shocked by her appearance.

"My favorite part is how excited they sound to win the swag, little did they know, I was just around the corner..." she captioned a video that captured the surprise moment.

"They were catching up on the last episode of Season 5 when I went in, and we all giggled nervously as we took pictures during the famous "shame" scene. I had the most amazing time, everyone was so welcoming and excited...Thanks to Mark, Kate and company for having us in your lovely flat. Enjoy the rest of Season 6," she wrote afterwards discussing the evening alongside a photo of herself with the members of the viewing party.

Game of Thrones airs Sundays at 9 p.m. ET on HBO.