Move the Seven, Change the Game: What the Craps Variants Actually Do
Seven is the most common roll with two dice - six ways out of thirty-six, more than any other total. Every rule in craps is built around that fact, and the fastest way to understand the game is to look at what happens when a variant changes the seven's role.
The variants on this site are not cosmetic reskins. Each one moves the seven, and each one produces a measurably different game.
Why seven dominates
Two dice give 36 combinations. Seven can be made six ways (1-6, 2-5, 3-4 and their reverses). Six and eight can be made five ways each. Five and nine, four ways. Four and ten, three. Three and eleven, two. Two and twelve, one each.
That distribution is the entire game. It is why a point of 4 pays 2 to 1 on the odds - three ways to make it against six ways to seven out. It is why 6 and 8 are the best points. And it is why the come-out roll, where seven wins for the pass line, is the only moment when the most likely number is your friend.
After the point is established, the seven becomes the enemy, and it is the single most likely thing to happen. That inversion - the same number switching from best to worst - is what gives craps its rhythm.
Crapless Craps: removing a way to lose makes it worse
In standard craps, rolling 2, 3 or 12 on the come-out loses immediately. Crapless Craps removes that: nothing loses on the come-out except... nothing. Every number except seven becomes a point.
It sounds strictly better. It is considerably worse, and the reason is instructive.
By removing the come-out loss, you also remove 11 as an automatic winner, and you add 2, 3, 11 and 12 as points. A point of 2 has exactly one way to be made against six ways to seven out - odds of 6 to 1 against. Those are dreadful points to be stuck with, and you will be stuck with them often enough that the pass line edge rises from about 1.41% to roughly 5.4%.
Roughly four times worse, achieved by removing a rule that made you lose. It is the clearest lesson in the whole family: a rule change that eliminates an obvious downside can quietly create a much larger one, and the only way to know is to do the arithmetic rather than trust the framing.
High Point and Die Rich: changing what resolves
High Point takes a different approach. Rolls of 2 and 3 on the come-out are simply ignored and re-rolled, and 11 and 12 become immediate winners. The seven's role is unchanged, but the come-out is reshaped around it.
Die Rich goes further, using a single die and resolving far more quickly. With one die there is no seven at all, which removes the entire structure the game is normally built on and produces something much closer to a pure coin-flip mechanism.
Playing them back to back is the quickest way to feel how much of craps' character comes from the two-dice probability curve rather than from the betting layout.
Hazard: the ancestor
Hazard is the game craps descends from - an English dice game documented for centuries, played in gambling houses long before anyone said "pass line". Its rules are genuinely complicated: the shooter names a "main" between 5 and 9, and the outcome depends on the relationship between that main and what is rolled, with different numbers "nicking" or "throwing out" depending on the main chosen.
Craps is essentially Hazard with the main fixed and the bookkeeping simplified. Playing a few rounds is worth it for the historical perspective: you can see the modern game's structure inside it, plus a great deal that was stripped away for speed.
Street Craps goes in the other direction - no layout, no house, players betting against each other directly. Without a casino taking a margin it is the purest form, and it also demonstrates why the house exists: somebody has to hold the stakes and settle disputes.
What changing the rules teaches
The broader lesson here is about how sensitive games are to single parameters. One rule adjustment in Crapless Craps quadruples the house edge. Removing a die in Die Rich removes the game's entire probability structure.
Almost every game family works this way, and the rule that gets adjusted is usually the one everybody assumed was fundamental. In the draughts family, whether a king moves one square or slides the whole diagonal changes the endgame completely - play Checkers online across two variants and half your accumulated technique stops applying.
The card families do the same thing with their central resource. The whole difficulty of two-deck patience comes from being allowed to move only one card at a time, and relaxing that single constraint transforms the game - Play Solitaire and the games that let you move any card with everything on top of it barely resemble the ones that do not.
Practical guidance, whichever variant
The advice that survives every rule change on this list:
- Find the bet with no margin, if one exists. In standard craps that is the odds bet behind the line.
- Distrust rules that only seem to remove losses. Crapless is the canonical example.
- Prefer the simplest bets. Complexity on a casino layout correlates almost perfectly with house edge.
- Check where the seven sits. In any craps variant, the first question is what seven does on the come-out and what it does afterward. Everything else follows.
Take it to the board
Play ten minutes of standard craps, then ten minutes of Crapless using the same bets, and notice how often you end up on a point of 2, 3, 11 or 12 and how those resolve. It is a more persuasive demonstration of the edge difference than any table of numbers.
The rules hub covers every variant here, the history FAQ covers the Hazard lineage, the luck-versus-skill FAQ is a good companion, and the glossary names everything. All play money - there is no real gambling on this site.
For the one bet on the table with no house edge at all, see the companion piece.
🎲 Put it into practice: roll at a free craps table, brush up on the rules, or take on the daily challenge.