Hunter x Hunter (2011) Episode 61: Invitation x and x Friend
Episode 61 of 148 of Hunter x Hunter (2011), aired January 5, 2013, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Gon and Killua have finally made it inside the world of Greed Island, their clue to finding Ging. However, all they found was a message from Ging telling Gon to enjoy the game. Their first step is to find a city and gather information. There, they receive an invitation to join a group that's trying to clear the game.