I was wondering about a couple of things this first of all will everyones games be featured in a video

my other question is will everyone participating get anything even if they didn't win like credits or a special achievement that says that they participated in big game jam 6  

Only the top 10 community voted games, the 5 judges' picks, and the favorite game of the guest judge will for sure be in the video, but the rest have a chance of being added as background footage for the opening and in between moments of the video.

And no, only games that ranked in the top ten or are picked by judges will get any prize