what's your opinion about BTConline.io? Is it a scam?

Last month I created an account at freebitco.in and started rolling. After I reached above 8000 satoshi I started playing the Hi-Lo game. After making a profit in the first few games, suddenly I lost a considerable amount of satoshi and now I'm at almost 2500. I have already played above 250 free rolls and above 10,000 multiply BTC rolls. Have anyone faced similar circumstances? Although it's gambling can anyone suggest the proper method of how to fetch bitcoins from this site? I have seen a few fetching bitcoins from there although they have old accounts and have played more than 800 free rolls and numerous multiply BTC rolls. It'll be very helpful if anyone shares his/her ideas.

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