Scenarios are long-term tests comprised of several tasks. They are usually explicitly stated to a player, whether through story or as formal win conditions. Some games only have one scenario, such as Scrabble or Space Invaders. However videogames often have several scenarios, which are collectively grouped as campaigns.
God of War places the player in several settings, each with a scenario to overcome before a cut scene moves the story to a new location. Winning a match in tennis or completing a series of connected goals in CityVille are others examples of scenarios.
Games use many names to describe scenarios such as mission, quest, episode, stage, world or chapter.
