safe Winebottler download?

At my son's summer camp they designed a video game on a PC and told me to use/play it on my Mac I needed to download a program called Winebottler: http://winebottler.kronenberg.org

I've looked on a few other sites as well (including Mac Update) and they all seem risky to me. Is Winebottler legit? Where's the best place to download a safe version of it?

Thanks!