RTP, or return to player, is the share of everything wagered that a game returns to players over a long run of rounds. Coin Flip and Mines run at 98%, Plinko at 97%, European roulette at 97.3%, blackjack at 99.5%. The spread looks trivial until it is converted into money at realistic turnover.
The house edge in actual numbers
The house edge is 100% minus RTP. At 98% the casino expects to keep two cents of every dollar wagered; at 99.5% it keeps half a cent. The word doing the work is wagered — the figure applies to total turnover, not to your deposit, and every re-bet of winnings counts again.
A thousand 1 USD bets is 1000 USD of turnover. At 98% RTP the expected loss is 20 USD, at 97.3% it is 27 USD, at 99.5% it is 5 USD. The same number of rounds costs more than five times as much at one end of that list as at the other. No line reads zero: any RTP below 100% means the long run works against the player, and picking a game makes that cheaper, never absent.
RTP across Tonza Originals
| Game | RTP | House edge | Expected loss per 1000 USD wagered |
|---|---|---|---|
| Blackjack | 99.5% | 0.5% | 5 USD |
| Coin Flip | 98% | 2% | 20 USD |
| Mines | 98% | 2% | 20 USD |
| Roulette (European, single zero) | 97.3% | 2.7% | 27 USD |
| Plinko | 97% | 3% | 30 USD |
These are theoretical figures that only emerge across large samples. A hundred rounds can land anywhere, in either direction, and none of it contradicts the table. The full set of formats sits in Tonza Originals.
Why blackjack is the outlier
99.5% is the only line in that table that depends on the player. The table rules are fixed: eight decks, dealer stands on all 17s, blackjack pays 3:2, with doubling, splitting to four hands and insurance available. Those rules set the ceiling; reaching it is your job, through basic strategy — the decision chart that assigns one correct action to every combination of your hand and the dealer's upcard.
Basic strategy does not make the game profitable. It only avoids widening an edge the rules already contain, because every decision made on instinct is a deviation paid out of your balance. Insurance is the clearest case: it feels like protection against a dealer blackjack, but it is a separate bet on the hole card being a ten, and in an eight-deck game it loses money on its own terms. The published 99.5% is calculated without it.
A high RTP does not flatten variance
RTP answers the question of what an hour of play costs on average, not whether you will be up tonight. Short-term outcomes belong to variance instead.
Plinko makes the point: low, medium and high risk all carry the same stated 97% yet behave nothing alike. Low risk produces frequent small returns and a gentle balance curve; high risk produces long dry stretches broken by rare large hits. Mines tells the same story — more mines on the field means a steeper multiplier per revealed step and a shorter typical run. The settings reshape the risk, they do not discount it.
Fairness of a single round is a separate question with a separate answer. Each result is derived from a server seed whose hash is published beforehand, your client seed and a nonce, and the seed is revealed afterwards so the round can be recomputed by hand; the method is documented on the provably fair page. It verifies rounds, not the long-run RTP, which only shows up over distance.
Where the number really matters
Bonus wagering is where RTP stops being trivia. An x40 requirement turns into turnover measured in thousands, and turnover carries an expected price: 4000 USD pushed through a 4% edge costs about 160 USD in expectation, through a 0.5% edge about 20 USD. Constraints sit on top — a 5 USD maximum bet while wagering and a 7-day window. Which amount the requirement is calculated from, and what counts toward it, is set out in the bonus terms, worth reading before the first deposit rather than after.
