Stake released their coinflip game today and just as coinflip on any other casino site it's the biggest nonsense you will ever see. 

Make 100 bets on heads and you are guaranteed to lose, same with the other side. Whatever u choose the software will produce big runs on the opposite site, as always. I made some bets chasing a tiny 2 in a row win  (round 4x odds) which should mathematically happen 1 in 4 spins right. I have gotten 33 wins in 224 spins, so instead of an expected 25% win chance my result was under 15%, that's quite a big difference. I know "in the long run" this supposedly evens out, yet I don't think so.
Well I have tried and my verdict for this game is that it's garbage. But like I said, every single casino site that offers this game in their originals brings basically the same results. Don't waste your time and play something else, trust me.