Hello human beings,
recently, I moved all my funds from Cointiply since they give no more interests and loyalty... still a good site but not a place to leave your sats now.
So I decided to use the few coins I can grab daily (300 or so) for gambling onto the multiplier.
The What ?
Multiplier is a feature of the site. You can wager the amount you want starting from 10 coins and you can decide, for every betting round, how many times you will try to multiply the prize. You can multiply max 11 times.

I looked around and found out that every level you take in the multiplier has a 66% success, while the initial level has 68.7%. A small calculus:

One or two levels is not different, the house is winning the same. And it's even worst with more levels.
However I tried anyway; even betfury is built for the house but we can use it to mill some coins.
I gambled the minimal bet, one level. In case of win, I repeated, if I had lost I tried to recover going level2. In case of win I returned to step1. In case of another loss I would double the bet and tried to reach level2.... did not work. I burned everything.
Why I didn't usa a martingale : extremely expensive. If you lose 10 you need 22 coins to recover and then you need 80 coins to recover the loss and then 300 if you lose again. The next step is already 1030 coins.... just 5 losses... and in two steps you are in the tens of thousands:

Summary
- Multiplier is fair but favors the house a bit
- You can win, no doubt
- You tend to lose, no doubt
- To minimize the risk you need a lot of coins, A LOT.
- Considering the above and the fact that it's manual, I think it's better to avoid it, if not for few bets for fun.
with less coins and more knowledge,
ilpegg