Download & installDownload and install locally. No server needed.
Diablo build for modern operating systems
GamesOpen-source remakeRPG
From the README
DevilutionX is a port of Diablo and Hellfire that strives to make it simple to run the game while providing engine improvements, bug fixes, and some optional quality of life features.
Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.