Free Spins is the core bonus round that can be called the heart and highlight of a slot game. As the name suggests, it's a special opportunity to spin the reels a set number of times for free, without depleting the player's betting balance. However, the true value of free spins lies not just in the fact that they are 'free'. In most slots, free spins are like a 'Fever Time', a space where powerful additional features are activated that are on a different level from the base game, allowing players to anticipate massive high payouts.