Steam Cloud support has been extended to macOS devices!
This should allow save data to sync between Windows and Mac. However, if you previously launched the game on both platforms while Steam Cloud was not syncing correctly, please be careful when starting the game after this update.
In rare cases, Steam may ask which save file you want to keep, or an older local save may overwrite your newer progress. If you played on multiple devices, we recommend checking the Steam Cloud sync prompt carefully and backing up your local save files before launching the game.
Thank you for your patience, and please let us know if you continue to experience any save sync issues!