When casinos give away free spins as part of a bonus package or as a no-deposit offer, the value of the spins and the games they are allocated on are usually pre-set. As an example, you may be offered 10 free spins on Starburst for registering your account. The value of these spins may be C$0.10 each, for a single payline. You cannot change the game, the quantity or the value of the spins. A few casinos may allow you to choose between a couple of games but if you prefer more flexibility, then bonus funds rather than free spins may suit you better.