Double

Double is a mahjong solitaire game first released for Classic Mac OS in 1996 by PCV enr, with a Carbonized 2.0.4 build that runs on Mac OS 8.1 through Mac OS X. It bundles a generous selection of tilesets and board layouts, giving the familiar pair-matching puzzle a configurable, long-lived feel on vintage Macs.

Mahjong Solitaire Done Simply

The objective is the standard one: clear the board by removing matching pairs of free tiles until nothing remains. Tiles are free when they have no neighbour to the left or right and nothing stacked on top, which keeps each layout a fresh logical puzzle rather than a memory exercise.

Tilesets and Layouts

Double ships with multiple tilesets (traditional mahjong faces and themed alternatives) and assorted board arrangements, so players can pick the visual style and difficulty curve that suits them. Switching is handled from in-app menus, no fiddling with resources required.

Two Builds, Wide Coverage

Version 1.1 is a 68k/PPC fat binary aimed at System 7. Version 2.0.4 is a Carbonized PowerPC release that runs natively on later Mac OS 8.x, 9.x, and Mac OS X, making this one of the rare Classic-era puzzle releases that survived the Carbon transition cleanly.

A Quiet Garden Favourite

Although it never hit mainstream visibility, Double has held a 4-of-5 average rating from Macintosh Garden voters, suggesting it punches above its weight as a no-frills daily mahjong fix.