VCMI

About

VCMI is an open-source engine for Heroes III that offers new and extended possibilities. To use it, you need to own the original Heroes III data files.

VCMI includes GUI improvements such as high-resolution support, a stack queue, and a creature window. Its mod support lets you add new towns, creatures, heroes, artifacts, and spells without limits or conflicts. A launcher provides easy configuration and lets you download mods from the VCMI server and install them immediately.

VCMI runs on Windows, Linux, macOS, iOS, and Android. It also includes a global lobby where you can play together with others.