Can I install Multiplicity on my other computer w/o Steam client? Perhaps download the an installable version from Stardock and install with my Steam-purchased key?
Since a Secondary does not need to be activated, yes... Just install with the SD installer and have it be a Secondary. Just know it can never be a Primary without using the Steam version (uninstall \ reinstall with Steam client).
Sean Drohan
Stardock Support Manager