HoMM 3 HD - a non-official fan made addon (multifunction patch) for Heroes of Might and Magic 3.
Initially, the addon was created to change the original game resolution 800x600 to a bigger but now it has even more features.
HoMM 3 HD does not affect the original gameplay and improves the interface functionality, makes it more comfortable to play and fixes a some original game bugs.
All the tiny graphical improvements preserve the original game style.
HoMM 3 HD does not affect the original game files. This means that you can launch the original version with no changes from the very folder where the HoMM 3 HD was installed.
UI and game settings extended functionality
HD+ (original gameplay fixes and other essential features for online multiplayer gaming)
Original game bug fixes
HoMM3 HD is not compatible with The Restoration of Erathia, Armageddon's Blade, Heroes Chronicles!