captain_cosmotic: How can I detect which version (32 or 64bit) was installed by Galaxy?
Easiest way would be to check the Graphics options - if Visual Quality is limited to Low and Medium options only (missing High and Awesome), then you're likely running the 32 bit version.
Another way is to check with a task manager when the game is running to see if it's listed as 32 or 64 bit.
Finally, another way is to check the Dreamfall Chapters.exe file properties - under the compatibility tab, for "Compatibility Mode" if the first OS listed in the drop box is Windows Vista, it's 64bit; if it's Windows 95, it's 32 bit.
Odds are, if you haven't got the latest update (yesterday), the update prior to this installed the 32 bit version.
Of course, in order to run the 64 bit version, you must also be running a 64 bit version of Windows.