Personally I am very much into books and not at all into gaming. But as far as I am aware of many people are very much passionate about gaming. So of a fair amount of users are interested, then you should definitely go for it.
Readers users interested in books could help build a collection of books related to computer and games topics... And users interested in Games and Apps, can share eBook readers apps.
I think that both groups of users with different interests can complement each other through one or two points in common (books and apps).