FhDoom

fhDOOM is a source port for Doom 3 with the goal of modernising the base game and the id Tech 4 engine while retaining the original feature set. It covers the original game, its expansion Resurrection of Evil and all game tools. It features a complete port for modern and  as well as soft shadows using, soft particles, -based build system and experimental support for -based tools. A fork project by MamiyaOtaru also exists.