Free spins are a type of no deposit bonus offered by some online casinos.
This is just another way for online casinos to attract new players. Free spins are - as other casino bonus types - usually subject to wagering requirements.
Sometimes it is restricted how much you can cash out as a maximum from your free spins. It might also be restricted which slot games you can play with it. Make sure you check out the terms and conditions of the online casino where you are planning on taking advantage of the free spins offer.
Microgaming, RTG, BetOnSoft and Netent casinos are the best known for offering this type of no deposit bonus.
The good news is that on top of the free spins you will almost always find an attractive casino bonus for your first or even additional deposits too.
It is hard to set up a good strategy for the free spins bonus as all online casinos are different and what will work in one casino will not necessarily work in the other.
It is a good opportunity to try a new online casino or a new casino game because you are not risking any of your own money.
Good luck and may the scatters be with you!