Rules
Each flip is an independent 50/50 trial using the same random source as the rest of the site. A correct call increases the streak; the displayed multiplier is 1.9 raised to the streak length (rounded to two decimals).
Cash out credits stake × multiplier in virtual coins. A wrong call ends the round with no return. Keys: H heads, T tails, C cash out. “Cash out” here only means collecting virtual coins — nothing can be withdrawn as money.