Is Potionomics completely free?

The listing on this page offers a free download of the pre-installed build. The game is also sold on Steam, and purchasing there supports the developers and gives you official updates.

How do I install Potionomics?

Extract the downloaded package into a folder excluded from antivirus scanning, install any required apps from the Redist or _CommonRedist folder, then run Potionomics.exe as administrator. An Installation Guide.txt inside the game files covers the full process.