From the first moment you launch this game, you will notice the similarities between the Flintstones and this game. Winstones is an interesting prehistoric-themed online slot game created by Genesis Gaming. The game uses simple cartoonish visuals and basic animations. On 5 reels and 25 paylines, you will find a wild symbol which looks like the game’s logo. It replaces all basic symbols to complete the winning line and it also doubles the prizes. The mammoth is the Scatter symbol. When you manage to get at least three scatters on the reels, you will trigger up to 20 Free Spins with all wins multiplied by 2, 3 or 5 times. It is possible to re-trigger this mode if you hit more scatter symbols.