What works

Installation, Settings, Character Creation, Gameplay.

From the website, you will get an error saying a windows computer is needed to run the game.  Under that error is a link to download the installer.

For 64-bit users, you will need to install/run the game with wine64 rather then wine, for instance:

$ WINEPREFIX="/my/dir/petsnmons" wine64 ./pvm-en-install.exe

What does not
Installing the game with 32 bit wine on a 64 bit computer.  Other then that, nothing else noted.

What was not tested
Extended Gameplay, Saving Characters, Interacting with Others.

Additional Comments

If for some reason you wanted to look at the contents of the installer (you need 7zip to extract):

$ 7z x pvm-en-install.exe