Both companies share a similar reason for leaving the social networking site: It’s just too costly to allocate resources when their Facebook services provide content to active users. It’s just not the same market on Google+.
Wooga has already discontinued its Monster World game, PopCap plans to shut down its services soon.
It doesn’t look as though Google+ in particular is at fault, since the games debuted with a high activity level. No, instead, it seems as though social gaming is simply beginning to fall into disfavor with people, as Facebook has also seen an exponentially large fall in social gaming as well, and social gaming websites are rapidly falling into decline.