OpenHoMM 
OpenHoMM is open source clone of 'Heroes Of Might And Magic III Shadow Of Death' game engine.
Some demo (build Qt 5.8 2017/06/07)
Requirments:
- original game data
- Qt >= 5.5.1
Plans for near future:
- It is necessary to rewrite support of snd/lod, because QFSFileEngine, QAbstractFileEngine, QAbstractFileEngineIterator and QAbstractFileEngineHandler were removed from Qt 5 public API.
- Migrate build system from qmake to qbs or cmake.