Microgaming's branded Playboy slot was the 4th game they released to use the popular and impressive
243 ways-to-win engine first deployed in Thunderstruck 2 back around 2011. It has subsequently
been used in the Immortal Romance and Finer Reels Of Life slots and as a set, these are arguably now
Microgaming's most popular slot games.
Of the 4, Playboy seems to me to be the highest volatility in general although the beauty of this design is that you can essentially affect the volatility yourself by picking from 1 of 4 very different free spin features with extra wilds, wild reels or multipliers. In Playboy, this is more obvious because the Wild Nights and Running Wilds features are definitely high variance, especially the latter.
Incidentally, a point of note: when you unlock all 4 features you achieve "platinum" status and as you would expect, the 4 Playboy models featured in teh game get their togs off. But don't get too excited: strategicaly placed cameras and poses mean it's all very tame. It's just a slot game, remember? ;)