A browser game is a video game that is played on a web browser. It is different from other video and computer games in that it normally does not need any software to be installed on the user's computer, except for 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.