What Defines A Game Level(Gamasutra Question 1)

Game levels have been around since video games were first created in the 1970's, but what is a game level?A game level is in simple terms,  is the playing space in which you the player move around in.

A Level will consist of different enemies, environments, flora and fauna, items and objects. In Each level the player will be given a task or mission to complete to progress to the next level or next task. With all the different types of genres, levels can either be very open or linear. For Example: Assassin Creed Series(Open world maps), Call Of Duty Series(very structured and straight forward). 

Levels can have a wide mixture of problems and puzzles, which can reward you with items,hints,weapons, secrets,or cheat codes. What defines a good level is how well it represents what kind of setting it has, as well as the environment and events the will occur in the playing space. Setting the theme of the video game and portray what kind of style and genre.