I sent a email asking this question before, but I have not gotten a response. Anyway in the app submission guidlines there is a line that states "Apps portraying realistic images of people or animals being killed or maimed, shot, stabbed, tortured or injured will be rejected". I work for a company and most of what we are creating, VOD systems and websites are geared toward outdoorsman, being hunting and fishing content. I have published a channel for our content on Roku's channel store and I am in the middle of developing my first swift app for tvOS with the same content.
However, one of my superviser's told me that another company we have a relationship with tried to submit similar content and was rejected. So before I can move forward with my project I have to see if the app will be rejected because of our content. It has been a blast learning Swift 2.0 and finally getting the chance to work with tvOS/iOS. Our plan was to submit a tvOS and iOS app, with different layouts.
It's very likely whether you're approved or not is going to depend entirely on your definition of "realistic". As a point of reference, the videos I've seen for Big Game Hunter Pro 2014 doesn't feature any gore and focuses a lot on the mechanics of where and how to shoot a deer in an efficient manner. And, you know, if you type in "hunter" in the app store, there are a few pages of deer hunting games.
I expect that if your definition of "realistic" involves blood or things other than the technical aspects of shooting, you're going to end up revising your application after submitting it to the app store.