Gamba Probability Calculator
Start with Blackjack. Choose whether you control the Player or the Dealer. Smooth dealing, flips, bust effects, and a layout designed for future games.
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Select a game
Blackjack is available now. Others are reserved for future games and richer modes (multiplayer, leaderboard, etc).
Future game space
Dealer CPU
Total: —
Bet
Current: $0
Select a chip, then click to add.
Player YOU
Total: —
Bankroll
$100,000
Debt
$0
You control
Player
Select chips and place a bet. Then click “New round”.
Chips
Click a chip to select it, then click the bet area to add.
Blackjack setup
Choose which seat you control. Your bankroll and bet apply to the seat you control.
Rules: dealer stands on soft 17. Actions: hit/stand, double (one card then stand), split (same-rank pair; one split).
Betting: win 1:1, blackjack 3:2, push returns, loss loses bet.
Borrowing warning
You borrowed money to cover a bet. Borrowing is automatic once your bet goes past your available bankroll.
- Each single borrow is capped at $500,000.
- If you still have debt after every 2 completed rounds, the debt compounds by 10%.
- Winnings automatically reduce debt.
- Reset clears everything and restores the bankroll to $100,000.