It doesn't matter if in 100 or 1,000 spins, you cannot get a scatter. It only matters if you get (usually) minimum three scatters. Sometimes I spent 1-2 hours in a session full of single and double scatters, but never all three scatters came out Sometimes out of nothing you will get bonus round in less than 10 spins, sometimes in 1,000 spins you'll get no bonus round, it's completely random. What you can notice is, the system almost always gives intermediary wins, whether it's 10% or 1,000% of your wager, it's completely random as well. Who knows man, maybe on your 151th spin, you'll get all five/six scatters. That's the beauty of slots