Level

A level, also called a stage, an area, or a world, is a room containing a challenge for a player to overcome. Levels have a start point where the player begins and a way to beat it. Ways of beating a level include making it to a certain point, defeating certain things in the level, collecting certain things in the level, or playing until a time limit runs out (often used in bonus levels). Levels are usually found in every game, though many puzzle games do not have levels.

In some games, "level" refers to a group of challenges with one theme.