FHeroes 2 Enhanced
Free Heroes 2 by ciplogic is an engine recreation of game Heroes 2 (of Might and Magic) with UI and coding enhancements.
However work is suspended from year 2018.
Some people notice that issues are untouched and sadly they will remain as such. As for now, I have lost the interest to strongly go into code and fix issues, for various reasons, including a heavier setup. Though I will not close it, as people can contribute simple fixes as PRs and if they kind of work on my machine, I will incorporate and make a new release.
Now I am trying to redo the game in Java (basically a port of C++ code, but with some easier to debug/contribute, and it will run eventually on a Mac!, 4K screens, it supports 2X and 4X scaling) using JavaFX.
If you are interested into contributing and make Free Heroes 2 "Great again" (sorry, I dislike some guy making things great again), and you like a modern up-to-date Java (meaning you can use "var" keyword, enhanced switch, etc), a full map loading is working with game that supports multiple scalings and a working game on Linux/Windows/Mac (it should work even on Mac/Big Sur). I didn't try it on R-Pi, but it should work on a R-Pi3 or alike with a modern OpenJDK install.