> ## Documentation Index
> Fetch the complete documentation index at: https://aceup.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Rules and the edge

> The full rule set, and what the house actually keeps.

![The in-app rules screen, each rule illustrated with its cards and the house edges printed.](https://mintcdn.com/aceup/9Or0tHJTM0oGeA8-/images/screens/rules.webp?fit=max\&auto=format\&n=9Or0tHJTM0oGeA8-\&q=85\&s=65e9580498483f8aca0b7bc7bf2d8479)

## The rule set

| Rule | Ace Up |
| - | - |
| Decks | **6**, reshuffled every round |
| Dealer on 17 | **Hits** soft 17 (H17) |
| Dealer peek | Yes, on a ten or an ace |
| Blackjack pays | **3:2** |
| Double | **Hard 10 or 11 only**, on your first two cards |
| Double after split | **Not allowed** |
| Split | Any pair, to **2** hands — any two ten-value cards count as a pair |
| Split aces | One card each, no resplit |
| Insurance | Offered, pays **2:1** |
| Surrender | **Off** |

## The house edge

**0.89%** on the main hand.

Measured on Ace Up's own engine over **9,000,000 simulated rounds** of basic
strategy — not copied from a chart (rules v6, since 15 September 2026; the
double and split rules above are what moved it from the 0.49% of the first
rule set). It is the share of everything wagered that the house keeps on
average, across a very large number of hands.

For comparison, blackjack at other crypto casinos sits around 0.5%, and the
house-built games most of them push — crash, dice, plinko — typically charge 1%.
We are in line with the first and well under the second.

There is **no rake and no table fee**. The edge is the only thing the house
earns from a hand.

## Side bets, and their edges

Side bets are optional and they are expensive. Ace Up prints their edges on the
rules screen for the same reason it prints the main one.

| Side bet | House edge |
| - | - |
| Perfect Pairs | **6.109%** |
| 21+3 | **6.073%** |

That is about seven times the main hand. Each side bet is capped at **20%** of
your main bet. They are a fun bet, not a good one,
and pretending otherwise is what cheap casinos do.

Full paytables are on [Side bets](https://aceup.mintlify.site/play/side-bets.md).

## Why reshuffling every round matters

The shoe is rebuilt and reshuffled for every single round. Two consequences:

* **Card counting does not work here.** There is no count to carry and no
  penetration to exploit. This is not a countermeasure bolted on — it falls out
  of deriving the shoe from the round's own seed.
* **No hand owes anything to the last one.** A losing streak does not make the
  next hand more likely to win, and a winning one does not make it less. Each
  round is dealt from a fresh six-deck shoe.

## Six decks, not infinite

An infinite deck would add roughly 0.06% to the house edge and would read as a
video-slot gimmick. Six decks is what a real blackjack table uses, and the
side-bet paytables above are the standard six-deck ones.

## Related

> [card] [Side bets](https://aceup.mintlify.site/play/side-bets.md)
>
> Perfect Pairs and 21+3, with the full paytables.

> [card] [Provably fair](https://aceup.mintlify.site/fair/overview.md)
>
> How the shuffle is committed before the deal.


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