How about invest on gambling casino dice which offered investment?
there's no more passive income style investment in bitcoin
either they are scam or ponzi type of "investment"

you need more active on your investment, like buy account for signature campaign and earn more bitcoin after posting constructive things in this forum
Investing in gambling sites, can only make small incomes.
For example, I've invested 0.5 CLAM in JD before, and then wait 2 month, and only get 10% extra as return. Adding the price increase of CLAM during that period (but it is also a risk), my total gain is 20-30% during then. The income may not even outweigh the price decrease of the coins (though it may increase like my case). Consider what you can lose, because when the site gone, you will lose all your money..
What the...

You got this much profit and you complain? You got 120% per year + compounding. Thats a great Profit. And in fact you even got more you say.
I don't understand you. With that attitude you ask for getting scammed since you should think about where these profits should come from. And when there would be a better business then surely investors would flow in and lower the profits fast.
You really should think over your demands. HYIP's aren't real and you sound like someone searching a HYIP.
When you really only have 0.5 Bitcoins then you should buy a good account and earn from posting on the forum. That's the only way i can imagine for you.