An Alternate Reality Game, or ARG for short, is an interactive story that is driven by player choice. ARG game is a bit redundant since the G in the acronym already stands for game. Unlike internet puzzles and conspiracy theories, at least a part of the story unfolds in real life, abbreviated as IRL in discussion forums. A major element of the ARG is a collaborative suspension of disbelief referred to by the phrase, This is not a game or TINAG. Players know it’s a game but because the real world is part of the storytelling canvas, they often don’t know where the game ends and the real world begins. This is a great article about one of the best ARGs of all time, Year Zero.