The 1.2.2 version of Mega Fifteen for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program lies within Games, more precisely Puzzle.
This software for Mac OS X is an intellectual property of Cristallight Inc. The most popular versions among the program users are 1.2 and 1.0. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
Mega Fifteen is a sliding square puzzle, a superset of the Feefteen Puzzle, One of the World's Best Known Puzzles. It consists of 9, 15, 24, and 35 numbered squares that are placed in a 3x3, 4x4, 5x5, and 6x6 leaving one position empty. The goal is to reposition the squares from a given arbitrary starting arrangement by sliding them one at a time into the ordered configuration.
You may want to check out more software for Mac, such as MEGA 5, Mega Hearts 2 or Super Mega Worm, which might be similar to Mega Fifteen.
Puzzle
Puzzle