High variance is definitely the main thing you need to know about Flaming Skulls. The base game can feel pretty slow, but the scatter mechanics and wild re-spins can hit surprisingly hard if luck is on your side. Never chase losses on this title because it will eat through a balance quickly during a cold streak. Before dipping into my actual bankroll, I used an offer from truefortunebonus.co.uk/no-deposit-bonus/ just to get a feel for the hit frequency and bonus triggers. Set a strict loss limit and stop as soon as you hit a decent multiplier.