Google has added a new flavour to Google+ i.e. Games. Not sute how it is going to be useful to beat the rival Facebook. I personally favour Google, becuase my daily life reveolves around the best thing Google gave to us (Google Search), but still I don't see any reason to switch to Google+. Probably there is nothing extra which FB is not giving or FB is good enough that there is not need to switch.
Anyways... I might try games if I could find something cool for my 3.5 years kid else big NO to this feature. There are several other sites where I can play games if I want.