A game is structured playing, usually undertaken for enjoyment and sometimes used as an educational tool. Games are distinct from work, which is usually carried out for remuneration, and from art, which is more often an expression of aesthetic or ideological elements. However, the distinction is not clear-cut, and many games are also considered to be work (such as professional players of spectator sports/games) or art (such as jigsaw puzzles or games involving an artistic layout such as Mahjong, solitaire, or some video games). Key components of games are goals, rules, challenge, and interaction. Games generally involve mental or physical stimulation, and often both. Many games help develop practical skills, serve as a form of exercise, or otherwise perform an educational, simulational, or psychological role. According to Chris Crawford, the requirement for player interaction puts activities such as jigsaw puzzles and solitaire "games" into the category of puzzles rather than games.

A browser game is a computer game that is played over the Internet using a web browser.[1] Browser games can be created and run using standard web technologies[2] or browser plug-ins. Browser games include all video game genres and can be single-player or multiplayer. Browser games are also portable and can be played on multiple different devices or web browsers.[3] Browser games come in many genres and themes that appeal to both core players and casual players.