What is a long complex game?

A long complex game typically refers to a board game, video game, or role-playing game that features intricate mechanics, multiple layers of strategy, and often an extensive narrative. These games usually require a significant time investment to learn and play, often involving deep decision-making and interaction among players. Examples include games like "Dungeons & Dragons," "Civilization," or "Gloomhaven," which can take hours or even days to complete a single session or campaign. The depth and complexity can create rich experiences but may also deter casual players.