Some clients offer a double or nothing card gamble on the total once a bought round finishes, which is a separate mechanic with its own return figure. Notes collected on
https://thebonusbuyslots.com explain how that gamble usually sits near 97 percent and caps at a fixed amount. Using it after paying a hundred times stake turns one variable outcome into two, which rarely improves anything. I leave it alone, though the maths behind it is not unfair.
