Electronic games are devices or computer program and provide entertainment by challenging a person's eye-hand coordination or mental abilities. These electronic games are marketed in various formats, such as hand-held one-player models, cartridges or compact discs that are inserted in modules attached to television sets, computer programs to run on personal or network computers, and freestanding arcade versions. The appeals are come from the computer program that synchronizes flashing lights and a variety of sounds with the movie like animated action portrayed on a graphic display. The games may be contested among several players, or an individual. Some internet-based games involve thousands of individuals interacting with each other in ongoing, open-ended play. Game subjects include sports like baseball and football; action warfare, space-oriented games, adventure, role playing, casino gambling such as roulette, poker, and simulated slot machines, classics as contract bridge, chess and backgammon etc.