A "bonus" is an additional win received at a casino, usually for certain promotions or events. Bonuses can be rewarded in the form of free spins, additional Chips on the player's account, or as gifts in the form of - naturally - non-cash prizes. Bonuses are an important part of online gaming and can help you win more or play longer. However, it is important to know the terms and conditions of each bonus as they often come with specific wager requirements.