An ARGAn ARG, or Alternate Reality Game, is an interactive form of entertainment that blurs the line between the real world and a fictional narrative. Players engage in a combination of online and offline activities to solve puzzles, uncover clues, and progress the game’s storyline. , or Alternate Reality Game, is an interactive form of entertainment that blurs the line between the real world and a fictional narrative. Players engage in a combination of online and offline activities to solve puzzles, uncover clues, and progress the game’s storyline.