The Secret of Greed Island. The multi-billionaire Battera hires Gon and Killua to play the Greed Island video game for him, just as the two had hoped. But when they enter the game and head to a nearby town, they stumble onto the game's dark secret. Greed Island isn't just a game- it has real-life consequences that can spell life or death for the players involved. And it isn't long before the Spiders enter the game themselves!