- Wagering – Free spins with wagering of x40 or below are generally considered to be reasonable. Anything higher starts to get difficult.
- Value – Each free spin is usually valued at 0.10. Anything less is considered to be low.
- Max win – You might only be allowed to win a maximum amount from your free spins. Ideally, there will be no max win just in case you strike lucky.
- Eligible games – Most free spins can only be used on certain slots.
- Expiry – You will have a set amount of time to use your free spins. Some may need to be used within 24 hours.
- Batches – Some casinos give out free spins in batches per day.
Of course, there are some online casino free spins bonuses that are more popular than others.