The reason is of course the fact that casinos don’t want to lose all their money to players who only use the deposit bonuses and go away.And skip the reviews with one or two words, if you like.The wagering requirements need to be completed within a specific period for players to withdraw the winnings.  For the rest, it's more of a peer to peer reference that works, or the uniqueness of their offering in the casino games.The first-deposit welcoming bonus is 150%, while the next three deposits will get you bonuses in the amount of 50%.