Frogger (フロッガー) is a 1981 arcade game developed by Konami and licensed for North American distribution by Sega-Gremlin and worldwide by Sega itself. It is regarded as a classic from the golden age of video arcade games, noted for its novel gameplay and theme. The object of the game is to direct frogs to their homes one by one by crossing a busy road and navigating a river full of hazards. The Frogger coin-op is an early example of a game with more than one CPU, as it used two Z80 processors.

The game starts with three, five, or seven frogs (lives), depending on the settings used by the operator. The player guides a frog which starts at the bottom of the screen, to his home in one of 5 slots at the top of the screen. The lower half of the screen contains a road with motor vehicles, which in various versions include cars, trucks, buses, dune buggies, bulldozers, vans, taxis, bicyclists, and/or motorcycles, speeding along it horizontally. The upper half of the screen consists of a river with logs, alligators, and turtles, all moving horizontally across the screen. The very top of the screen contains five "frog homes" which are the destinations for each frog. Every level is timed; the player must act quickly to finish each level before the time expires.