Browser games are electronic games that are played on web browsers. They are distinct from other video and computer games in that they typically do not require any client side software to be installed, apart from the web browser. There are games that rely solely on client-side technologies such as JavaScript or common plugins such as Java or Flash Player, whereas some employ server-side scripting. The latter case consists typically of massive multiplayer games, whereas the client-side games are typically single-player games. A game played in a browser is often called a browser-based game.