"Retention" is a word that refers to the percentage that a casino or site operator keeps out of each wager placed on its platform. This amount is known as the "house edge" and is an important part of an operator's business model throughout the industry. It serves as a source of profit for the casino and helps cover the costs of operating and maintaining the platform. The higher the retention, the lower the chances are of winning for the player. It is important to note that the concept of retention should not be equated with cheating or the establishment of unfavorable conditions for the player, but rather is simply a factor that effects the odds of winning.