A bonus round or bonus game, known in the industry as an end game, is a special round in a game show or similar contest. The bonus round usually follows a main game (also called a front game in the industry) as a bonus to the winner of that game. In the bonus round, the stakes are higher and the game is considered to be tougher.
The game play of a bonus round usually varies from the standard game play of the front game, although there are often borrowed or related elements of the main game in the bonus round in order to ensure the entire show has a unified premise. Though some end games are referred to as "bonus rounds", many are not specifically referred to as such in games, though they fit the same general role.