It's clear, if your requirement shows 0.00007 btc currently and somehow you manage 0.0001 btc in your account, then you will be able to make free roll without captcha for a while. Cause the requirement will increase after every free rolls you play. As example, after first roll without captcha the requirement will increase at 0.000078 btc, on next roll it will increase at 0.00009 btc, at next it will reach above 0.0001 btc. So finally you need to manage more higher balance in your account to play without captcha. It's not the accurate increase rate, I have showed it as an example. Hope you got the point.

But remember the requirement will continuously increase after every free roll. Better to follow the method as TheQuin said. You won't get captcha anymore by having 100$ equivalent amount in btc at your account always.

no limit you can deposite any amount because some time back I deposited few time 3000 Satoshies from one faucet its works ok for me.

They have not done it in a long time and I doubt they will bring it back. There is already plenty of other bonuses you can get like Free BTC bonus, Multiply BTC bonus, lottery tickets, golden tickets, Super Bonanza week, 3-5x reward points promotions, and reward points which can be redeemed for various bonuses.

I worded my question wrong, sorry. I meant the multiply BTC deposit bonus. I know for sure it was there some time ago.

What is this for, then? And how do I get it?

https://freebitco.in/site/bonus-terms/

I understand. Thank you!

Yeah the bonus is still available and I tried using it recently after a few months of  not using it but now it doesn't
work like it used to.
I had about 1500 satoshis from the bonus  and I claimed the bonus with my 1000 satoshis and lost.
And after checking it after, the rest 500 satoshis  of the bonus  were gone too.

Thanks for the clarification I probably did not pay enough attention  before, and this is the
first time I noticed it so I thought something is wrong with it.

Damn, the people who have consistently used this faucet since 2013 are probably millionaires by now. And to see some of the comments (since the thread is also that old) saying that it "might" be worth their time is hilarious in hindsight.