How the Gamble Feature Works
After any winning spin in the base game (not during free spins), a "Gamble" button appears alongside the "Collect" option. Selecting Gamble takes you to a card-guessing mini-game:
Colour guess: Pick red or black. Correct = 2x your win. Wrong = lose the win.
Suit guess: Pick hearts, diamonds, clubs, or spades. Correct = 4x your win. Wrong = lose the win.
The Mathematics
Colour guess: 50% chance of 2x = 1.0x expected value (neutral).
Suit guess: 25% chance of 4x = 1.0x expected value (neutral).
Both options have identical expected value to simply collecting the win. The gamble feature does not add or remove from RTP — it redistributes wins into higher-variance outcomes.
When to Use It (and When Not To)
There is no mathematically optimal time to use the gamble feature — it is purely a risk preference choice. Some arguments for using it: you want to extend the entertainment value of a small win, or you are in a free spins drought and want to amplify a base game hit. Arguments against: you are close to your session loss limit, the win is significant relative to your bankroll, or you simply want to protect your balance.
A common mistake: using the gamble feature on a large win after a long dry spell. This "feels" justified but mathematically there is no reason to gamble a $50 win that took 200 spins to produce — you have a 50% chance of losing it entirely.
Availability
The gamble feature is not available in all regions. It is typically disabled at casinos operating under UKGC licenses due to UK gambling regulations. If you do not see the Gamble button, this is why — it is a regulatory restriction, not a game setting you can change.