According to Wikipedia, grinding is a term used in computer game to describe the process of engaging in repetitive and or non-entertaining game play in order to gain access to other features within the game.Skilled players are familiar with grinding mobs.In the challenging game, new abilities which are used to kill more massive characters in different types and special titles can be rewarded in grinding mobs.Grinding can also appear in some certain games in which features can be unlocked. One of the most important factor is the player's desire to arrive what appears to be the game's final goal, which for many games is to reach the maximum top step.