Blackjack

Quick verdict: a single-hand shoe game with a short rule sheet

iSoftBet's Blackjack is a single-hand RNG table game, dealt by software rather than a live dealer, with a listed release date of 1 May 2015. There are no side bets, no other seats and no decision timer. The published rule summaries fit on an index card: eight decks, the dealer stands on all 17s, blackjack pays 3:2, insurance pays 2:1, one split per hand, and no check for dealer blackjack when the upcard is a ten.

Those rules are close to standard but not identical, and in blackjack every rule moves the house edge by a measurable amount. This review uses widely published rule-variation figures to price each one. One caveat comes first: iSoftBet does not publish the rule sheet itself, so the rules below are as widely reported, and the RTP is listed as either 99.64% or 99.40%; check the game's info screen for the figure in use.

Blackjack (iSoftBet) spec sheet

The rule sheet as reported

iSoftBet does not publish a public rules page for this game, so the in-game help screen is the place to confirm any rule before relying on it. The list below is the rule set as published rule summaries describe it, not an official specification.

1. Eight decks in the shoe.
2. Dealer stands on all 17s, hard (10-7) or soft (ace-6).
3. No blackjack check under a ten: with a ten-value upcard, the dealer does not look for blackjack before you act.
4. One split, only when your first two cards are a pair.
5. Doubling draws exactly one card and ends your turn.
6. Insurance is offered when the dealer shows a possible blackjack and pays 2:1.
7. Standard wins pay 1:1; a two-card 21 pays 3:2.
8. One hand, no side bets.

Not documented in the published summaries: which totals you may double on, whether doubling after a split is allowed, whether split aces get one card, whether the dealer checks under an ace, and whether surrender exists. These gaps are flagged where they matter below, and each one is worth checking in the help screen, because several of them change the correct play on specific hands.

Pricing each rule in house edge

Standard blackjack rule-variation tables show how each common rule change shifts the player's expected return. The figures below are from the player's side, so negative is bad for the player, and they use an eight-deck game as the base, which matches this game's reported shoe.

Eight decks. Widely published deck-count analysis puts the house edge under a common example rule set at 0.014% with one deck and 0.577% with eight, a 0.563% gap. The largest share, 0.433%, comes from standing on stiff hands of 12 to 16: in a small deck, the low cards in your hand leave the remaining cards richer in tens, so the dealer busts more often. Doubling is also worth more with fewer decks, because the cards you hold have a bigger influence on what is left. Eight decks dilute both effects, which is why shoe games carry a slightly higher edge than hand-held games with otherwise identical rules.

Dealer stands on all 17s. Hitting soft 17 would cost the player 0.22%, so standing is the favourable version. The reason is simple: a dealer who hits ace-6 gets a second chance to improve a weak 17 into 18 to 21, and that improvement more than offsets the extra busts.

3:2 blackjack. Also favourable. Cutting blackjack to 6:5 costs 1.39%, which makes it by far the most expensive of the common rule changes. A 3:2 table pays 1.5x the stake on a natural; a 6:5 table pays 1.2x, and naturals arrive often enough that the difference dominates every other rule on this list.

One split. "Player may not resplit" costs 0.10%. If only one split is allowed, a pair dealt after splitting cannot be split again, so a hand such as 8-8 that draws another 8 has to be played as a hard 16.

These numbers do not add up to an exact house edge; rule effects interact, and several rules here are undocumented. What the table shows is direction: two player-friendly rules (stand on soft 17, 3:2 blackjack) against three small costs (eight decks, one split, partial no-check).

When the dealer shows a ten and does not check

In most American-style blackjack, a dealer showing an ace or a ten checks the face-down card before anyone acts. If it is blackjack, the hand ends and players lose only their original bet. In European no-hole-card blackjack, the dealer takes no second card until players finish. The consequence is well known: if you double or split and the dealer then makes blackjack, you can lose the extra bets as well.

The published rule summaries report that iSoftBet's dealer does not check under a ten. They do not say what happens under an ace beyond insurance being offered, or whether doubled and split hands lose everything or only the original bet when the dealer turns over blackjack. Some no-hole-card tables return the extra stake in that situation (a rule often called "original bets only"), which removes most of the cost; the help screen is the place to see which version applies.

Standard rule-variation figures price full European no hole card at -0.11%, assuming extra bets are lost. Because this game skips the check only under a ten, and the treatment of extra bets is unknown, its cost here should be no higher than that and may be lower.

Published no-hole-card strategy also lists the changes to make when the dealer has not checked:

• Hard 11 against a ten: hit rather than double.
• Pair of 8s against a ten or ace: hit rather than split.
• Pair of aces against an ace: still split.

The logic is that doubling and splitting put a bigger stake on the table before a dealer blackjack is known. With a ten showing, the dealer's hidden card is an ace roughly one time in thirteen, and in those rounds a doubled 11 loses twice the stake instead of once. That extra risk is enough to tip hard 11 against a ten from a double to a hit. These changes apply only if extra bets really are lost.

One round, from bet to settlement

1. Place a bet in the single betting position.
2. Two cards are dealt face up to you, one face up to the dealer.
3. If the upcard could make blackjack, insurance may be offered. If taken and the dealer has blackjack, insurance pays 2:1 while the main bet loses.
4. A two-card 21 pays 3:2 unless the dealer also has blackjack.
5. You hit, stand, double (one card, turn ends) or split a pair once.
6. The dealer draws to 17 or more and stands on every 17.
7. Beat the dealer's total, or see the dealer bust, and the hand pays 1:1. Ties return the bet. A player bust always loses.

The order in step 7 matters more than it looks. You act first, so if you bust, your hand is settled as a loss before the dealer draws, even if the dealer later busts too. That built-in timing advantage is the main source of the house edge in any blackjack game, and the 3:2 payment on naturals plus your freedom to double and split are what claw most of it back.

Buttons instead of hand signals

At a physical table, players signal decisions by hand so the dealer and cameras can see them clearly. A single-player RNG game replaces each signal with an on-screen control:

Exact button labels and layout are not publicly documented, so the table describes function rather than appearance. Published descriptions note two interface details: there is no timer, and the game shows prompts warning about a bad move before you make it.

Basic strategy for eight decks with the dealer standing on 17

Basic strategy is the decision for each player hand and dealer upcard that gives the best long-run result under the rules in play. It does not beat the game. Played perfectly, it still leaves the house edge in place; it only avoids adding to it. Both reported RTP figures assume it. The guidance below follows the widely published chart for four to eight decks with the dealer standing on soft 17, shown here as game knowledge.

Hard totals

• 12: stand against a dealer 4 to 6; otherwise hit.
• 13 to 16: stand against a dealer 2 to 6; otherwise hit.
• 17 or more: always stand. 8 or less: always hit.

Doubling

• Hard 9 against 3 to 6; hard 10 against 2 to 9; hard 11 against 2 to 10 (hit 11 against a ten under the no-check rule).
• Soft 13 to 18 mainly against a dealer 3 to 6, with the lower soft totals doubled against fewer upcards.

Soft totals

• Soft 17 or less: hit when not doubling.
• Soft 18: stand, except hit against 9, 10 or ace.
• Soft 19 or more: stand.

Pairs (one split only)

• Aces and 8s: split (hit 8s against a ten or ace under the no-check rule).
• 10s and 5s: never split.
• 2s and 3s: split against 4 to 7. 6s: against 3 to 6. 7s: against 2 to 7.
• 9s: split against 2 to 6, 8 or 9; stand against 7, 10 or ace.
• 4s: split against 5 or 6 only if doubling after a split is allowed, which is not documented, so the conservative reading is not to split.

Surrender and insurance

• The full chart surrenders hard 16 against 9, 10 or ace and hard 15 against 10. Surrender is not listed here, so those hands are hit.
• Standard strategy advice is never to take insurance. It is a separate bet that the dealer holds a ten underneath, and an eight-deck shoe does not hold enough tens for 2:1 to be a fair price.

The pattern behind the chart is worth knowing because it makes the individual lines easier to remember. Dealer upcards of 2 to 6 are weak: the dealer must keep drawing to 17 and busts often, so the chart stands on stiff totals and doubles more aggressively against them. Upcards of 7 to ace are strong, so the chart keeps drawing on 12 to 16 and saves doubles for totals that are likely to finish at 20 or 21.

With an RNG shoe and no published information on reshuffling, card counting has no reliable basis here.

99.64% or 99.40%: what the RTP means

Two RTP figures circulate for this game: 99.64% and 99.40%, the latter stated as assuming basic strategy. Some versions may list either; check the game's info screen for the setting in use.

As house edge, those are 0.36% and 0.60%. Over a very long run with perfect strategy, one describes a game keeping 36 units of every 10,000 staked, the other 60. The 0.24-point gap is larger than the published cost of hitting soft 17, so it is not a rounding difference.

The widely published eight-deck example edge of 0.577% sits nearer the 0.60% figure, but its example rules are not identical to this game's, so that is a comparison, not a confirmation. Either way, the figure assumes every decision follows basic strategy; standing on 12 against a 2, splitting 10s or taking insurance all push the real long-run return lower. RTP in blackjack is a long-run design figure, and short sessions can land far from it in either direction.

Why there is no verified max win

No max win is published, and blackjack does not have one in the slot sense. The reported rules do show what a single round can return against the original bet:

• Standard win: 1x. Blackjack: 1.5x.
• Winning double: 2x.
• Split with both hands winning: 2x.
• Split with both hands doubled and won: 4x, but only if doubling after a split is allowed, which is undocumented.
• Insurance pays 2:1 on the side bet, but the main bet loses to the dealer blackjack in that round, so it offsets a loss rather than creating a larger top result.

The largest confirmed single-round return is therefore 2x the original bet, with 4x possible only under an unconfirmed rule.

Where this game sits among blackjack formats

iSoftBet's Multihand version. iSoftBet also offers a multi-hand software blackjack. Published descriptions of that game report eight decks shuffled after each round, up to five hands, no resplitting or surrender, doubling after a split, and a dealer who does peek. If accurate, the Multihand game differs on the no-check rule and is the closer match for anyone who wants several hands.

European no-hole-card blackjack. The ten-up rule is a partial form of the European approach described above. This game appears to sit between the American and European models, which is why its strategy adjustments apply only against a ten.

Single-deck and hit-soft-17 games. On standard rule-variation figures, eight decks trail a single deck by 0.48% for the player, while standing on soft 17 here is worth 0.22% over a hit-soft-17 table. The reported rule set lands in the middle of common online blackjack: better than hit-soft-17 or 6:5 tables, weaker than fewer-deck games with resplitting.

Who this blackjack table suits

It suits players who want blackjack in its plainest form: one hand, no side bets, no clock and eight rules. The in-game warnings about poor moves make it a sensible place to learn basic strategy decisions in a free-to-play setting. It also suits players who want to know exactly what each rule does, since every reported rule can be checked against the figures above.

It suits players less if they want several hands, side bets, a live-table feel, or a rule set verifiable from an official source.

The case for and against Blackjack (iSoftBet)

Pros

• Two player-friendly core rules: the dealer stands on all 17s and blackjack pays 3:2.
• One hand, no side bets and no timer keep decisions simple and unhurried.
• In-game prompts reportedly warn about poor moves.
• Both reported RTP figures are high for a casino-style game, assuming basic strategy.

Cons

• The RTP is unconfirmed, and the two reported figures differ by 0.24 points.
• Eight decks, one split and no check under a ten each cost the player a little.
• Rules are not published in verifiable form, so details such as doubling after a split are unknown.

Questions about iSoftBet Blackjack