The Thunderstruck slot is a legend in online slot players’ circles. It was the first “free spins” bonus slot to make it big on the web and to this day is still my favourite slot, online or off. It’s a 5 reel jobby with a free spins bonus game, awarded when you get 3 or more orange “scatter rams” in view. You get 15 free spins with all wins trebled which can lead to some huge hits. I’ve had 500x my bet back on several occasions and frequently get 100x. That’s not to say that Thunderstruck isn’t streaky – it can eat money sometimes. Have a play on the free Thunderstruck slot game below and if you enjoy it as much as me, sign up to any of the casinos to play it. Note for Americans: US residents currently excluded from signing up to online casinos with Thunderstruck, but the casinos shown below have plenty of similar slots.