The most valuable symbol in the game is the Book of Dead icon. An innovative, fun Bingo slot by Play'n Go. Pigs in masks fly everywhere in the barn and send 30 numbered balls your way. . The most valuable symbol in the game is the Book of Dead icon. Pigs in masks fly everywhere in the barn and send 30 numbered balls your way. An innovative, fun Bingo slot by Play'n Go. It works as both the wild. These include the Pharao, Anubis, and Rich Wilde. It works as both the wild. The game can be played with up to 4. These include the Pharao, Anubis, and Rich Wilde. The game can be played with up to 4.