I have heard some good things about Chimaera and I think there is a lot of opportunity to come in several of the gaming tokens. I am not much of a gamer myself but it is definitely going to be one of the areas of the blockchains that is going to pull a lot of eyes and have a huge diversity of content.
In time, the community aspects of places like steem and ono etc will integrate across the other platforms too and run side by side or overlap with other chains. The VR aspect will of course require more services than the gaming chain will handle itself so utility chains like steem and EOS could be decent candidates considering their speed and potential capacity.
It is an interesting world we are building.