Official patches and mods for Heroes 4 by Equlibris.

Added after 5 minutes
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Tell me, I have WoW!
What do I need to install Equlibris?
Do I just need to download this "heroes4_sfx.exe" file and that's it?

What does this Equlibris provide? Where can I read info about it?

Respectfully,
Prorock.

You need to download the entire Equlibris, which is 7 Mb.
And this file is needed to launch the game if the installed WoW did not run without a disc.
And as for Equi itself, here: http://forum.heroesleague.ru/viewtopic.php?t=419