I forgotten a site where I've invested only 1mbtc and got 8mbtc. If anyone knows about it please let me know. also similar sites like that will do. Thanks for reading.
If you manage to invest around 10 mbtc than betking will be good choice, there is good chance to make profit there because I have good experience with them, after this crypto-games is also good option for investment so that I will suggest these sites for you.