In this game, they have been included 11 ordinary symbols, a wild symbol, and a bonus scatter, and this relatively large number of symbols can get to affect somehow the pace in obtaining hits, in such a way that normally getting non-winning spins are not actually uncommon in this slot; however, the wild symbol helps a bit with this matter and also helps a bit to capture the interest of the player thanks to this is entitled to double your winnings every time it participates in the formation of any line.
I think the performance of this slot during the base game is merely acceptable, however, its free spins round has a good winning potential since, once it is unleashed, the player is taken to a stage where there is a wheel of fortune ready to define your number of free spins and multiplier to be applied to your winnings during the round.
Unlike other similar features included in many other video slots, in this game the multipliers are not smaller as it is increased the number of free spins, but it is practically the opposite, like this: 5 spins - x2; 10 spins - x3; 15 spins - x3; 20 spins - x3; 20 spins - x5.
In my personal case, my greater round today, it was a round of 20 free spins with x3 multiplier that in the end only meant a total win equivalent to 36x my total bet, which was in fact a smaller prize than the win I achieved during the last turn of my session, where I got a payout of almost 42x my total bet, which became practically the whole of my net profit since before that last turn, I had already returned almost all my profits to the machine; then at that point I decided to leave the game to keep at least these last gains.
Personally, I think “Winstones” is a fun slot and, as far as I'm concerned, fair as well.