These are basically free spins offered without having to make a deposit. Spins can only be used on slot machines and usually only applicable on specific games highlighted by the casino. One of the most popular no deposit spins bonus tends to be 10 free spins available on the slot game Starburst.
Free spins (with or without a deposit) are extremely popular either in addition to the main welcome bonus or exclusively. Bear in mind that no deposit free spins will usually come with much higher wagering requirements, we’ve seen as high as 100x! But the good news is that winnings from slot games usually contribute 100% to the wagering requirements.