MacOS version is not available on steam. Data can be transferred between mac and windows version. You can past the content of the
Mac: ~/Library/Application Support/BoredBasmati/CorruptionTown
folder to the
Windows: C:\Users\%UserProfile%\AppData\LocalLow\BoredBasmati\CorruptionTown
If you purchased the game on Steam contact me on discord and I'll send you a mac version.