Wesley has already commented on this and...I agree.

I've seen games that have nothing to do with the theme, and don't require much effort, get up to 50 user reviews. 

This is because they ask for a "trade" where you have to give 5 stars in every category. 

I'm not saying it's wrong to ask for an "honest rating," but asking for something bought is wrong. In a competition, everyone should be judged on their effort. 

With all due respect, I hope the judges read my post and that no one takes it the wrong way. I understand that we all, as developers, put a lot of effort into making our games, but we should receive the rating we deserve, not the one we bought. 

Thanks for reading.