You get a certain number of free spins to use to play your favourite casino games. As the term suggests, you can play only slots with this bonus. The free spins don’t cost you anything and are usually offered by the casino to promote a new slot that has been launched or to highlight an existing slot. The casino informs you about the activation of the bonus once you open an account. Some casinos may need you to contact customer support to activate it, and some may require a bonus code. At some casinos, you may need to use a bonus code to activate the no deposit bonus. The bonus code is my explanation usually available soon as you open your account; all you have to do is enter it in the required field. Some of the casinos require the player to contact the support team to activate the bonus. You also have the option of not using the bonus; for that you will need to inform the support team soon as the bonus is made available.