A big part of games is the method of navigating through the 3D environment. Far from being standardized after near 20 years of real-time games, in a room full of 20 budding game artists and designers, you will get at least 20 different opinions on the best controls for a game. Obviously, the type of game plays a big part in the choice, but, additionally, the skill level of the player also dictates the choices. Many games allow the key controls to be remapped or assigned by the player, while others strive to make navigation as invisible to the user as possible, by allowing a mixture of controls.