Doom 3 1.3 1 Access

Did we miss your favorite 1.3.1 mod? Let us know in the comments below. And for more retro patching guides, check out our series on "Unreal Tournament 469e" and "Quake 3 1.32."

Open your console ( Ctrl+Alt+~ ) and type:

The 1.3.1 patch had a profound impact on the Doom 3 community. Players who had been experiencing issues with the original game were thrilled to see a stable and polished experience. The patch breathed new life into the game, attracting both new and returning players. Doom 3 1.3 1

While Doom 3’s multiplayer was never as celebrated as Quake III Arena’s , version 1.3.1 revitalized the deathmatch component. The patch addressed critical netcode issues that caused “shotgun lag” (where pellets registered half a second after firing) and added support for up to 16 players (up from 4 in the initial release). More importantly, 1.3.1 officially exposed several console commands and variables that modders had been requesting, including greater control over particle effects and hitbox detection. This gesture of goodwill directly enabled the creation of major total conversions, such as the Classic Doom mod (which recreated the original episodes in the id Tech 4 engine) and Last Man Standing , a co-op survival mod that became a cult favorite.

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

The physics engine breaks above 120 FPS (doors open too fast, items fall through floors). But you can cap it safely at 90 FPS:

First, let’s clarify the version number. You will often see it written as , 1.3.1 , or the search-friendly "Doom 3 1.3 1" . This was the final official patch released for the original Doom 3 (and its expansion Resurrection of Evil ) before id Software shifted focus to Quake 4 and ultimately released the source code to the public. Players who had been experiencing issues with the

: Famous stealth conversion mods like The Dark Mod explicitly require the "1.3.1.1304" standalone build of Doom 3 to pull base assets.

Multiplayer saw extensive rebalancing and network diagnostic improvements: