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id-Software
DOOM-3
C++2016–2025
id-Software / DOOM-3

DOOM-3

Doom 3 GPL source release

12Distinct people
13Mentions
0Explicit recommenders
3.6KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Doom 3 GPL source release

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year13 dated mentions

Observed mentions: 2016-01-31 05:25:41 UTC to 2025-08-24 16:16:58 UTC.

01232016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments20162017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments20202021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2025

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC303
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC101
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC202
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC101
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC000
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC000
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC101
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC101
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC202
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC202

What Hacker News says

13 sources
Carmack is a great empiricist, meaning he pays a lot of attention to how things work in a running system. All of his engines provide rich facilities for record and replay as well as running benchmarks. timedemo <demo file> uscache The DOOM3 source is here https://github.com/id-Software/DOOM-3 There are lots of facilities for recording and playing back demos. The author could record their own gameplay and play it back in realtime vs running timedemo (which plays back as fast as possible). https://github.com/id-Software/DOOM-3/blob/master/neo/framew... 2865: cmdSystem->AddCommand( "recordDemo", "records a demo" ); 2866: cmdSystem->AddCommand( "stopRecording", "stops demo recording" ); 2867: cmdSystem->AddCommand( "playDemo", "plays back a demo", 2868: cmdSystem->AddCommand( "timeDemo", "times a demo", 2869: cmdSystem
Read the rest
In Benchmarking Malloc with Doom 3
I like looking at much better code bases than my own when I am considering making something. It's weird, but it really motivates me. Here are a handful of ones that I really like (all related to gaming): DOOM: http://fabiensanglard.net/doom3/index.php - A great overview of it, mentioning the third game and its variants. Their whole github is pretty great. Just worth noting that many people consider Carmack's code to be some of the best in the industry. Really worth a read. https://github.com/fabiensanglard/Doom3-for-MacOSX- https://github.com/id-Software/DOOM https://github.com/id-Software/DOOM-3 Monogame: The Open Source implementation of Microsoft's XNA game dev framework. Really well loved C# code. And they keep it very clean. https://github.com/MonoGame/MonoGame Battle for Wesnoth: Famous and well loved open source 4x game https://git
Read the rest
hub.com/wesnoth/wesnoth Rogue-Likes: There are a bunch of rogue-likes that are open source. It's a lovely look at the evolution of the genre and old school limitations. The genre as a whole is very open source friendly. http://rephial.org/ - Angband https://github.com/crawl/crawl - Dungeon Crawl Stone Soup Lastly, here is a list of open source games. I would argue a huge chunk are not that nice. But there are gems in here. https://github.com/leereilly/games
In Show HN: Awesome-code-reading - A curated list of high-quality codebases to read
Doom 3 was touted[1] as having some "exceptional beauty." Naming, spacing of properties, consistency, and how multiple parameterized calls were formatted are quite nice. You can see an example on github[2], but for some reason the spacing is a bit off in the web view. I'd recommend cloning a local copy and taking a look. [1] http://kotaku.com/5975610/the-exceptional-beauty-of-doom-3s-... [2] https://github.com/id-Software/DOOM-3/blob/master/neo/game/a...
In Ask HN: What's the most elegant piece of code you've seen?

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