If you make a single deposit of only €/£25 you will get 50 free spins on Sparks. The spins will be credited automatically after your deposit.
…Well there’s even more:
Make a single deposit of €150 or more and get 250 free spins.
Make a single deposit of €300 or more and get 500 free spins
Choose one or both of the offers and E-mail firstname.lastname@example.org with the subject line “Sparks”. Your spins will be added to your account shortly after.