Installing the game appears to work.
What does not
The game fails immediately on launch. The backtrace begins:
"Unhandled exception: page fault on read access to 0x00000000 in 32-bit code (0x004262a2)."
Using the schedtool workaround doesn't change this (and wouldn't be expected to; see the 2011 test writeup).
What was not tested
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Current||Ubuntu 14.04 "Trusty" amd64 (+ variants like Kubuntu)||Jan 18 2015||1.6.2||Yes||No||Garbage||an anonymous user|
|Show||Ubuntu 11.04 "Natty" amd64 (+ variants like Kubuntu)||Jul 26 2011||1.3.25||Yes||Yes||Platinum||Marek PaÅ›nikowski|
|Show||Ubuntu 10.04 "Lucid" i386 (+ variants like Kubuntu)||Jul 18 2010||1.2-rc6||Yes||Yes||Platinum||an anonymous user|
|Show||Ubuntu 8.10 "Intrepid" i386 (+ variants like Kubuntu)||Mar 01 2009||1.1.16||Yes||Yes||Gold||an anonymous user|
|Show||Slackware 12.2||Jan 02 2009||1.1.10||Yes||Yes||Gold||Jarek|
|Bug #||Description||Status||Resolution||Other apps affected|
|14055||Heroes of Might and Magic III occasionally crashes in mp3dec.asi||CLOSED||INVALID||View|
|16683||Heroes 3 crashes intermittantly||CLOSED||DUPLICATE||View|
|20380||Heroes of Might and Magic III hangs (not a Wine bug)||CLOSED||INVALID||View|
|20830||Dameware NTutilities crashes trying yo create AD object||CLOSED||FIXED||View|
|22498||Stuttering sound when playing HoMM3||CLOSED||FIXED||View|
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 The old howto had a link pointing to outdated directplay dlls which cause problems with wine and generally don't work as expected.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.