In Mary Stayed Out All NightJang Geun Suk and Moon Geun Young play a game similar to Never Have I Ever — using their fingers? In this episode of Seoulmates Challenge, the Seoulmates play this simple but fun game — what secrets will we uncover?

This is a perfect game for sleepovers! Especially when it's late at night and people start letting down their guards... What other games do you want to see in action? Let us know in the comments below! Check out the Seoulmates YouTube channel to see what else they get up to, and don't forget to subscribe to DramaFever's YouTube channel for more awesome games next week!