echoes: The Green Grave is a cooperative audio mystery game by Ravensburger for one to four players. In this interactive board game, you work together to solve a puzzling mystery in the jungle. Using an app, you listen to mysterious sounds and voices linked to the game cards. By listening closely and combining clues, you put the events in the right order to reconstruct the story behind an ancient artifact. This atmospheric mystery adventure is ideal for small game nights or playing solo.