A game is organised playing, generally carried out for pleasure and often used as an educational tool. Video games are different from work, which is typically completed for remuneration, and from artwork, that is more often a manifestation of aesthetic or ideological components. However, the distinction isn't clear-cut, and several games are also regarded as work (such as for example professional participants of spectator sports/video games) or art (such as for example jigsaw puzzles or video games involving an artistic design such as for example Mahjong, solitaire, or some video gaming).
Key aspects of games are goals, guidelines, challenge, and interaction. Video games usually involve psychological or physical stimulation, and frequently both. Many video games help develop useful abilities, serve as a kind of exercise, or elsewhere perform an academic, simulational, or psychological function.