Doom 3 1.3 1 Jun 2026

version 1.3.1 is the definitive legacy patch for id Software's 2004 horror FPS , playing a critical role in preserving the original game's infrastructure and enabling the modern modding community.

Without 1.3.1, mods like The Dark Mod (a Thief-inspired stealth game) and Classic Doom 3 would not exist. Doom 3 1.3 1

Approximately 35 MB (incremental) or 100 MB (full) version 1

Running a 2004 game on a 2025 RTX 4090 sounds easy, but Doom 3 ’s engine (id Tech 4) has odd bottlenecks. Doom 3 1.3 1