In the first pic, if the middle stone is very near spherical, and appears 'pecked' into shape, I would say it is a nice game piece. My wife and I found one similar once. Very nice finds!
I posted pics a few weeks ago of some rocks I found near a shell midden. They are almost identical to yours and I was told they are just rocks. mine were found with pottery,tools and arrowheads
That said, how do you identify a game stone from just a rock?