Download of NuclearPuzzle 1.0 for Mac was 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. The actual developer of this free Mac application is Gengyun Li. 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:
NuclearPuzzle is a block building game for the atomic nucleus. The atomic nucleus structure is mysterious - you don’t know how exactly the protons and the neutrons distribute inside the atomic nucleus. For each atomic nucleus, there are 3 key values: the number of protons, the number of neutrons, and the value of nuclear spin.
In this nuclear puzzle game, you will use the cube block to represent protons and neutrons.
You may want to check out more Mac applications, such as Anawiki Puzzle Game, Jojo's Fashion Show - World Tour or BallsTrial, which might be related to NuclearPuzzle.