What does not
Everything I tried worked out of the box.
What was not tested
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Show||FreeBSD 11.0 x86_64||Jan 09 2017||1.8.6||Yes||Yes||Platinum||Serge Hooge|
|Show||Linux Mint 18 "Sarah" x86_64||Dec 03 2016||1.9.23||Yes||Yes||Platinum||an anonymous user|
|Current||Ubuntu 14.04 "Trusty" i386 (+ variants like Kubuntu)||Jun 29 2014||1.7.20||Yes||Yes||Platinum||Robert Zenz|
|Show||Linux Mint 17.3 "Rosa" x86_64||Apr 10 2016||1.6.2||Yes||Yes||Gold||an anonymous user|
|Show||Arch Linux x86_64||Sep 22 2013||1.7.2||Yes||Yes||Platinum||Bastian|
To get multiplayer working, you need native directplay dlls. The old howto had a link pointing to outdated directplay dlls which cause problems with wine and generally don't work as expected. However with the latest dplay from DirectX 9.0c multiplayer is (almost - see note for details) flawless.
In the wine wiki is described how to get native direct play dlls.
Personally I would recommend using winetricks directplay which installs dplay dlls and sets overwrite in winecfg, however you may choose do install manually those files in which case you need to:
You can now play Heroes 3 in HD, utilizing the full size of your screen, thanks to Heroes3HD mod. It doesn't change anything gameplay wise.
With recent Wine releases, Wine prefixes are set to Windows 7. Currently, it causes rendering issues when HD or HD+ mod are installed.
winecfg and setting the Windows version to Windows XP solves the rendering issues.