Button Box

Merge sort puzzle
1 player
Daily challenge
Phones and computers

Button Box is a merge sort puzzle that plays in the browser on phones, tablets and computers, for one player. It has a daily challenge, the same for everyone that day.

Merge buttons up eight kinds, from Shirt and Coat through Jade and Coral to Master, in six trays of three. Deal costs a move and brings two buttons one or two kinds below your highest. Moves count toward a fewest-moves record, and full trays with no legal move lose the game.

Play Button Box

How to play

Tap a tray, then another: its top buttons move onto the same kind or an empty spot
Three of a kind in one tray merge into a single button of the next kind
Deal adds two buttons to trays with room. Reach the Master button

The game shows these steps as you play, the first time.

Button Box gameplay — Button Box in play

Controls

Tap a tray, then the tray to move its top buttons to
Deal adds two buttons to trays with room
Keys 1 to 6 and D

Tips

Deals follow your best button: 60 percent of new buttons come from the kind just below and the rest from two below, so raising the top raises every deal.
Equal buttons on top of a tray move together, as many as fit, so two of a kind waiting in one tray take their third in a single move.
Deal costs a move and only fills trays with room; six full trays with no legal move end the run, so keep a merge ready before a late deal.

What ends a game of Button Box?

Making the Master button ends it as a win. The kinds run Shirt, Coat, Brass, Pearl, Jade, Coral, Silver, Master, each made from three of the kind below. The run is lost when all six trays are full and no button can move onto a matching one. Moves are counted, and the fewest to Master is kept.

What is different about the daily game?

The daily game uses the day's seed, so everyone starts from the same trays and gets the same deals for the same moves, which makes move counts comparable. A normal game deals at random each time. Both start with two deals already on the trays and the move counter at zero.

About this game

Made by Sucia in Houston, Texas. Built with AI assistance, designed and tested by Sucia. Last updated October 7, 2026. It plays in the browser on phones, tablets and computers, with no download and no sign-in; your best scores and progress stay in this browser on this device. Without a pass, every game is free for 5 minutes a game and 30 minutes a day; an Arcade pass removes the limit. How Sucia makes and tests its games.

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