It's both risky but joining HYIP is the most risky at all you will lost your btc 100% just like on my experience . well in gambling in casino will have more profitable but still risky if you're not lucky enough. besides gambling in casino gives you more experience that you'd never feel in your life. that's my opinion but all of us that has a experience in hyip you've better stay out of joining HYIP and make more profitable option there's a lot out there