Players can't use several consecutive free bonuses. Hence, in a case you used a free bonus as your last transaction, you'll need to make another deposit prior using this bonus.
Enjoy 15 free spins on Thors Vengeance by playing €30 on the same game.
Enjoy 30 free spins on Thors Vengeance by playing €40 on the same game.
Enjoy 45 free spins on Thors Vengeance by playing €60 on the same game.