The Aces bet in craps is a one-roll proposition on one exact result: 1-1, for a total of 2. At a common 30:1 payout, the bet wins only once in the 36 equally likely ordered two-dice combinations and carries a house edge of about 13.89%. The large payout is real; so is the price attached to it.
Start with the only combination that can win
Two fair dice can land in 36 ordered combinations. A total of 2 has only one of them: 1-1. That makes Aces one of the easiest craps propositions to understand mathematically, because there is no multi-roll sequence and no conditional point phase to model.
| Result | Dice combinations | Probability |
|---|---|---|
| Aces: 1-1 | 1 | 2.78% |
| Anything else | 35 | 97.22% |
The name snake eyes is just another table term for the same result. Aces does not mean “any craps.” It does not include 3 or 12, and it does not stay alive waiting for a later roll. The next valid roll either shows 1-1 or the wager is over.
That single-combination structure is why this wager belongs beside Boxcars and the hard-number Hop Bets when you compare proposition pricing.
The payout tells you more than the nickname
A common Aces payout is 30:1. If you stake $5 and 1-1 appears, the normal profit is $150 and the original $5 stake is returned. That sounds generous until you compare it with the fair price.
If one result wins and 35 results lose, a zero-edge payout would be 35:1. The casino is not paying 35 units of profit; on the common schedule it pays 30. That five-unit gap is where the house advantage comes from.
| Aces schedule | House edge |
|---|---|
| 33:1 | 5.56% |
| 32:1 | 8.33% |
| 31:1 | 11.11% |
| 30:1 | 13.89% |
| 29:1 | 16.67% |
The table shows why the printed paytable matters. “Aces” describes the event; it does not by itself describe the price. The Wizard of Odds craps proposition table documents how materially the edge changes as the payout changes.
Booking Aces on a live table
At a staffed craps game, Aces normally sits in the center proposition area. Players generally do not reach into that area and place their own chips. You give the dealer the money and call the wager clearly: “Five dollars Aces,” or “Five snake eyes.”
The timing matters because the bet resolves on the next valid roll. If the dice are already moving, the crew may refuse a late call. If several center bets are being booked at once, a good dealer repeats the call so the amount and destination are clear before action begins.
Suppose the point is 8 and you call $5 Aces. The next roll is 1-1. The Aces bet wins even though the point has not been made. If the next roll is 1-2, the Aces bet loses even though 3 is another “craps” total. If the next roll is 6-1, it loses immediately even though that seven may resolve several other wagers on the layout.
This separation of wagers is important. Center action can look like one cluster of exotic numbers, but the crew settles each proposition according to its own definition.
Aces, Any Craps and Horn bets are not interchangeable
Three calls that beginners often blur together are different products:
| Call | Winning totals | Typical structure |
|---|---|---|
| Aces | 2 only | One exact proposition |
| Any Craps | 2, 3 or 12 | One wager covering three totals |
| Horn | 2, 3, 11 and 12 | Stake divided across four propositions |
A Horn High Aces call is different again: it uses a Horn structure with an extra unit allocated to Aces. The extra chip does not change what “Aces” means; it changes how much of the total action is exposed to 1-1.
This is one reason verbal clarity matters at a busy game. “Aces,” “Any Craps,” and “Horn High Aces” can all involve the number 2, but their money distribution and settlement are different.
Work the expected value from the dice, not from the jackpot feeling
For a $1 Aces wager paying 30:1:
Expected value = (1/36 × $30) + (35/36 × -$1)
That equals about -$0.1389 per $1 wagered, or a 13.89% house edge.
The same calculation can be read another way. Aces wins 2.78% of the time and loses 97.22% of the time. The occasional 30-unit profit is not enough to compensate for the 35 losing combinations. A large win amount and a good price are not the same thing.
If you want to compare that cost with lower-edge line and place wagers, use Craps House Edge and the craps odds calculator. The comparison is more useful than asking whether a proposition “can hit.” Of course it can hit; the question is what you are paying for the chance.
What repeated Aces action does to a session
Because Aces resolves every roll, it can generate turnover very quickly. A player who bets $5 Aces once has only $5 of proposition exposure. A player who automatically rebooks $5 Aces for 80 rolls has put $400 of action through a 13.89% wager if the payout is 30:1.
Expected loss at that volume is approximately:
$400 × 13.89% = $55.56
That is an expectation, not a prediction of the session result. The player may hit multiple Aces, hit none, or finish ahead. But the cost of repeated action is the right lens for comparing a one-roll prop with lower-edge wagers that resolve more slowly.
The fast reset is part of the appeal. There is no need to follow a point cycle or remember whether a bet is working. The same speed is also what allows a high edge to act on a lot of money in a short time.
What the crew and surveillance actually care about
From the casino side, the mathematics of Aces is simple. The operational risk is booking and settlement. The crew wants to know four things: Was the bet called before the roll? What amount was booked? Was it booked specifically on Aces or on a combination wager? Was the correct posted payout used?
A dispute is therefore more likely to be procedural than mathematical. A player may claim a late chip was meant for Aces, or remember calling “horn high Aces” when the dealer heard a plain Horn. Clear repeat-backs and visible chip placement reduce those arguments.
Surveillance can reconstruct the sequence from chip movement, the verbal booking where audio is available, the dice release, and the result. A clean table procedure matters more than anyone’s superstition about whether snake eyes was “due.”
A practical decision rule for this proposition
Aces is easy to understand and expensive at the common 30:1 schedule. If your goal is to minimize expected loss, it is not a competitive choice against the lower-edge wagers available on a standard craps table. If you choose it for the one-roll excitement, treat the posted payout and the amount of repeated action as part of the decision rather than focusing only on the 30:1 win.
Before booking it, check three things: the exact payout, the amount you are willing to lose on repeated one-roll action, and whether you actually intend Aces rather than Any Craps or a Horn structure. Those checks prevent the two most common problems—paying too much for the event and booking a different wager from the one you thought you made.
For broader context, continue with craps bets explained, Craps Odds, and why betting systems do not change probability.