Hey there! It should first be noted that this mod is for a dated version of the game, 0.2.8.3, and will not work with current Hardware Tycoon versions.
If you understand this, and you have the 0.2.8.3 version, you simply download the file above and follow the instructions listed in the description.
To view file extensions on Mac, follow this guide:
Techradar.com
I hope this helps!
Thes_Gunslingers
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