Muggins (All Fives) Rules

Most domino games only pay out at the end of a round. Muggins, also called All Fives, pays out on nearly every single turn — the moment the open ends of the layout add up to a multiple of five, whoever just played scores it immediately, which turns the entire game into a running arithmetic contest rather than a race to simply empty your hand.

Setup and the Layout

Played with a standard double-6 set (28 tiles), each of two to four players draws 5 to 7 tiles depending on player count, with the rest left face down as the boneyard. The first player sets any domino to start the layout — traditionally the highest double in the starting hands, though house rules vary on this. From there, the layout grows outward in both directions as players match pips at either open end, exactly like standard block dominoes.

Scoring the Open Ends

After each tile is played, add up the values showing at the layout's open ends. A double counts both its sides toward this total (so a double-6 played at an open end contributes 12, not 6), while a domino played sideways at the start (a "spinner," in some house setups) can open up to four counting directions instead of the usual two. Whenever that total is a multiple of 5 — 5, 10, 15, 20, 25, 30, or higher — the player who just placed the tile scores that exact number of points immediately, added straight to their running total.

Calling "Muggins"

If a player plays a tile that scores but fails to notice and announce it, any other player at the table can call "muggins" and claim those missed points for themselves instead — a real penalty for inattention, and the reason experienced players re-check the open-end total after every single play rather than trusting their first glance. Whether muggins can be called by the very next player only, or by anyone at any later point before the next tile is played, is a common house-rule variation worth settling before the game starts.

Going Out and End-of-Round Scoring

A round ends when one player plays their last domino (going "domino") or when play is blocked — no player can make a legal move and the boneyard is empty. The player who goes out scores bonus points equal to the combined pip count of every opponent's remaining tiles, rounded down to the nearest multiple of 5. If the round is blocked instead, the player with the lowest pip total in hand scores the difference between their hand and everyone else's, also rounded to the nearest multiple of 5. Games are typically played to a target score of 200 or more, agreed before play begins.

What Separates Muggins From Ordinary Dominoes

Standard block dominoes only scores at the very end of a round, based on who's left holding the fewest pips. Muggins layers a live scoring system on top of that same basic block structure, which is why a player can be dominating the running score while still holding several tiles, or lose despite going out first if their opponents scored heavily on the open ends along the way. This scoring layer is also why the game's better-known American name, "All Fives," describes the mechanic directly, while "Muggins" (borrowed from the calling-out convention) became the more common name in club and tournament settings specifically.

The Arguments This Game Actually Produces

Beyond muggins timing, the most common table dispute is how doubles count toward an open end before and after they're covered — a double counts both faces only while it remains an open end; once another tile is played onto it, only the newly opened faces count going forward. A printable score sheet is worth keeping at the table specifically for tracking a running total across a full game to 200, since mental arithmetic on the open ends gets error-prone fast once several rounds have passed.

Questions People Still Ask Mid-Game

Does the very first domino played count for scoring? Only if its combined open-end value is already a multiple of 5 on its own — a double-5 opening the layout, for instance, scores 10 immediately for whoever placed it.

Can you decline to play a tile that would score against you somehow? There's no such thing as scoring against yourself in Muggins — any multiple of 5 you create always scores for you, the player who made the play, never for an opponent, so there's no reason to ever avoid a scoring move if you have one available.

What if nobody can call muggins before the next tile is already played? Once the next tile hits the layout, the missed points are gone for good — muggins can only be called on the immediately preceding play, not retroactively across multiple turns.