All the games are fair.
That's not what Redcoin says. He said earlier that if there haven't been enough losers recently then it's impossible to win:
Not sure how to be "provably fair". Its a different type of game, and only pays out when there are losers, same way as any modern slot machine.
If you win 98 points, it means somone has lost 100 points
I presume that means that if there isn't enough to pay out a winning coin toss, you won't get a winning coin toss. Is that correct?