https://bugs.winehq.org/show_bug.cgi?id=41305
--- Comment #7 from Josh winehq@iooioio.orion.uberspace.de --- I didn't build it myself though. I'm simply using the binary releases grabbed via PlayOnLinux (which I only use for downloading Wine, I do everything else by hand). Don't they come with WoW64 support?
I'm quite surprised because I run a lot of old games in 64bit prefixes and have never encountered an issue that didn't occur in the 32bit counterpart. Also, note that I got it working with a 64bit prefix on Wine 1.6.2.