Doom Retro

	Doom Retro
Codebase	Chocolate Doom 1.7
Developer(s)	Brad Harding
Initial release	1.0 (2013-12-10, 11 years ago)
Latest release	5.6.2 (2025-01-18, 43 hours ago)
Development status	Active
Written in	C
Target platform	Windows
License	GPLv3+
Website	www.doomretro.com
Source Repository (Git)	GitHub

Doom Retro is a source port based on Chocolate Doom, with enhancements from other Doom source ports, as well as several original ideas. It was first released on December 10, 2013 by Brad Harding to coincide with Doom’s 20th anniversary.

Doom Retro is deliberately minimalist in design, single-player only, and supports vanilla, limit removing, Boom, MBF and MBF21 compatible WAD files, while demo recording and playback have been disabled due to demo de-sync from added features.

Official support and binaries only target Windows, though it is able to be compiled on other systems such as Linux and macOS.

Features[edit]

General features[edit]

The limits of the original Doom are either raised or removed completely.
Support for DeHackEd files and lumps, including those with BOOM extensions
Specific support for Freedoom, Chex Quest, HacX and episodes 1 and 2 of Back to Saturn X
A majority of the bugs from the original Doom have been fixed.

Game play enhancements[edit]

More blood and blood splats
Corpses react to blast damage, and smear blood as they slide along.
Cacodemons have blue blood, and Hell knights and barons of Hell have green blood.
Objects are partially submerged, and the player’s view lowered, in liquid sectors.
Randomly mirrored corpses
Several hundred level-specific fixes are applied to repair problems such as missing or incorrect textures, stuck monsters, etc.

Graphical enhancements[edit]

640×400 resolution, twice the resolution of the original, 4:3 aspect ratio on any display size
Widescreen mode with optional heads-up display
Windowed and fullscreen modes, switchable at any time using ALT+ENTER
Uncapped framerates
Ten darker gamma correction levels to accommodate for brighter displays
Alpha, additive and per-pixel translucency effects
Dynamic shadows are cast by monsters.
Brightmaps
Various rendering improvements, less firelines, slime trails, "sparkles" along the bottom edge of doors, and a improved partial invisibility effect
Significant changes to automap (dynamically updates, a rotate mode, scaled thing triangles, wider solid walls and drawn over other walls, lines do not glitch along edges of the screen, secrets drawn correctly as they are discovered)
Several improvements to monster animations

User interface[edit]

Convenient built-in WAD launcher
A console
Better keyboard support (W/A/S/D keys are set by default, CAPSLOCK can toggle autorun, and the WINDOWS key is disabled)
Better gamepad support (DirectInput and XInput controllers supported, haptic feedback for XInput controllers when the player is injured or fires a weapon, controllers can be connected/disconnected mid-game)
Better mouse support (higher allowable mouse sensitivity, no vertical movement, use the mousewheel to change weapons)
Updated help screens
Several improvements to the menu and message systems
Support for BMP-format screenshots at native resolution

External links[edit]

Source code genealogy
Based on	Name	Base for
Chocolate Doom 1.7	Doom Retro	International Doom