According to Wikipedia, emergent gameplay refers to “complex situations in video games, board games, or table top role-playing games that emerge from the interaction of relatively simple game mechanics”. Emergent gameplay often can stem from the relatively simple decisions a player makes, the sum of which lead to more complex outcomes. It also can be created by adding multiple players to the same game environment or situation and having their individual actions impact upon the overall evolving situation. Or to put it another way, it is the human factor that comes with undertaking a task. For example, a story driven video game may offer the player a quest to travel to the valley of Constant Drizzle, vanquish the foul Myrmidons and reclaim the Heretical Grimoire of Colin. It is a very specific task with a binary outcome. But in an open world game without a pre-written story, the player has to find the aforementioned valley and their actions while exploring determine the fate of both the grimoire and the Myrmidons.