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{{Quake|4}} is a 3D first-person shooter released in 1996 by [[Wikipedia: id Software|id Software]]. [[w:Quake engine|It's engine]] was licensed out to many companies, including {{L|Valve}}. {{gldsrc|3.1}} is based off of Quake code, with its successors {{source|3.1}} and {{source2|3.1}} both retaining some residual Quake code.

The {{quakeengine|4}} introduced many of the concepts still used in Source today, such as the modern variant of the {{L|BSP}}, the use of a {{L|PVS}} and {{L|PAS}}, {{L|lightmap|precomputated lightmaps}}, {{L|visleaf|visleafs}} and {{L|brush|brush entities}}. Early GoldSrc multiplayer (until 2001) was based off the QuakeWorld multiplayer code. 

The {{quakeengine|3.1}} and its successor, the {{quake2engine|3.1}}, are now both retroactively referred to as {{idtech2|3.1}}. Both engines have been released as free and open source under the [[Wikipedia:GNU_General_Public_License#Version_2|GPLv2]] license, allowing for many [[#Source ports|source ports]] to be created, which add quality-of-life improvements and are now the preferred way of playing the game, including an [[#2021 Remaster|official source port released in 2021]].

== Bugs/Limitations ==
{{cleanup|
Clean up some of the grammar and the overuse of "...".}}
{{Bug|Overbright lighting (usually enabled on Software and other renderer) was broken/disabled on GLQuake with no options to re-enabling it via any command, which makes the color less saturated and lighting much darker.<br> It was also existed on the {{gldsrc|4}} engine (as they are based off Quake engine, albeit heavily modified) since the multi-texture update. Details for this bug on GoldSrc can be found on {{L|GoldSrc|it's page about the engine itself}}. <br>Most source ports will usually have this bug fixed.}}
{{bug|Zigzagging... See Matt's Ramblings, ''The code behind Quake's movement tricks explained (bunny-hopping, wall-running, and zig-zagging'' }}
{{bug|Wall running... See Matt's Ramblings, ''The code behind Quake's movement tricks explained (bunny-hopping, wall-running, and zig-zagging'' }}
{{bug|Bunny Hopping where forward isn't held in the air... See Matt's Ramblings, ''The code behind Quake's movement tricks explained (bunny-hopping, wall-running, and zig-zagging'' }}
{{bug|Strafe Jumping where forward held in the air... See Matt's Ramblings, ''Strafe-jumping physics explained'' }}

== Expansions/DLC ==
*'''Mission Pack No. 1: Scourge of Armagon''' is a three-episode expansion pack by Hipnotic Interactive (now {{L|Ritual}}).
*'''Mission Pack No. 2: Dissolution of Eternity''' is a two-episode expansion pack by Rogue Entertainment. 
*'''Dimension of the Past''' is an extra episode created by MachineGames and released for free as a gift for the game's 20th anniversary. This was also included in the [[Quake (1996)#2021 Remaster|Quake Remaster (2021)]].

== New gameplay elements ==
* Rocket Jump
* Grenade Jump
* Power ups
** Pentagram of Protection
** Ring of Shadows
** Quad Damage
* Unrestricted movement compared to [[w:Doom (1993 video game)|Doom (1996)]] where at least two players and enemies{{clarify}} can be in the same vertical space.

== Gameplay elements ==
* Telefrag

==Compilers==
Quake also uses three compiler tools in compiling a map: {{L|QBSP (Quake)|QBSP}}, {{L|VIS (Quake)|VIS}}, and {{L|LIGHT (Quake compiler)|LIGHT}}. The code for these was used as the basis of the compiling tools used by the compilers used by the Valve engine map compilers, as seen below:

{| class="wikitable"
|-
!  !! Original {{Quake|4.1}} compilers !! Original {{gldsrc|4.1}} compilers !! {{gldsrc}} {{L|ZHLT}}, {{L|VHLT}}, and derivatives !! {{source|4.1}} compilers !! {{source2|4.1}} compilers
|-
| '''{{L|BSP}}''' || {{L|QBSP}} ([https://github.com/id-Software/Quake-Tools/tree/master/qutils/QBSP Source code]) || {{L|QBSP2}} || {{L|HLBSP}} || {{L|VBSP}} || part of {{L|resourcecompiler}}{{confirm}}
|-
| '''[[Wikipedia:Constructive solid geometry|CSG]]''' || part of {{L|QBSP}} || {{L|QCSG}} || {{L|HLCSG}} || part of {{L|VBSP}} || part of {{L|resourcecompiler}}{{confirm}}
|-
| '''{{L|VIS}}''' || {{L|VIS (Quake compiler)|VIS}} ([https://github.com/id-Software/Quake-Tools/tree/master/qutils/VIS Source code]) || {{L|VIS (GoldSrc compiler)|VIS}} || {{L|HLVIS}} || {{L|VVIS}} || part of {{L|resourcecompiler}}{{confirm}}
|-
| '''{{L|RAD}}''' || {{L|LIGHT (Quake compiler)|LIGHT}}, no radiosity lighting ([https://github.com/id-Software/Quake-Tools/tree/master/qutils/LIGHT Source code]) || {{L|QRAD}} || {{L|HLRAD}} || {{L|VRAD}} || {{L|VRAD2}}/{{L|VRAD3}}
|}

== 2021 Remaster ==<!-- DO NOT CHANGE THE TITLE HERE TO AVOID BREAKING LINKS.-->
In 2021, [https://doomwiki.org/wiki/Nightdive%20Studios Nightdive Studios] released an official source port with new remastered lighting and models, using the Kex Engine framework to connect the underlying Quake engine code to modern APIs. The remaster, officially titled "Quake Enhanced", but also colloquially known as "Quake EX" or simply "QEX", runs under {{L|Vulkan}} on Windows 10 and later, and can also run on Linux and the Steam Deck using {{L|Proton}}. It can also unofficially run on Windows 7-8.1, without multiplayer support, and can be forced to run under {{L|DirectX Versions|DirectX 11}} by using the {{code|+r_rhirenderfamily d3d11}} {{L|Command Line Options|command-line argument}}.<!--OpenGL is not supported in this version of Kex-->

Although the engine code for the 2021 remaster is closed-source, the updated {{L|QuakeC}} game code has been released under the GPLv2 on [https://github.com/id-Software/quake-rerelease-qc id Software's GitHub]. This is the first time the game code for the mission packs has been released under this license, as they were previously only available under a less permissive license.{{clarify}}

== Videos ==
=== 2023 ===
Jukspa, [https://www.youtube.com/watch?v=dS2OuqSLY_E ''E1M1 TAS in 0:17.98 (Quake)''] beats the ''E1M1: The Slipgate Complex'' (with any %) in 0:17.98s (or 0:17.8) but doesn't provide .dem or .qtas files<br />
{{YouTubeEmbed|dS2OuqSLY_E}}<br />
=== 2022 ===
Muty, [https://www.youtube.com/watch?v=PU90hSIL6Fc ''Quake Speedrun in 11:42[World Record&#93;''] beats the game (with an % on easy) with [https://www.dropbox.com/s/frxif6o5h1rzure/all_1142.dem?dl=0 a demo file]. Note that the timer jumps around a second after each loading screen so ''time without loads'' is lower and around 10:06 according to the video<br />
{{YouTubeEmbed|PU90hSIL6Fc}}<br />
Matt's Ramblings, [https://www.youtube.com/watch?v=H8sDdEKizkk ''Speedrun Science: Beating Quake with code''] beats the ''E1M1: The Slipgate Complex'' (with any %) in 18.667s by using recent [[w:Differential evolution|differential evolution]] [https://doi.org/10.1109/TEVC.2009.2014613 JADE] and custom ''[https://github.com/lipsanen/TASQuake TASQuake]'' after about 50000000 games but doesn't provide .dem or .qtas files<br />
{{YouTubeEmbed|H8sDdEKizkk}}<br />
Matt's Ramblings, [https://www.youtube.com/watch?v=uX0Ye7qhRd4 ''Quake path traced in Blender''] ([http://matthewearl.github.io/2021/06/20/quake-blender/ behind the scenes])<br />
{{YouTubeEmbed|uX0Ye7qhRd4}}<br />
Matt's Ramblings, [https://www.youtube.com/watch?v=v3zT3Z5apaM ''The code behind Quake's movement tricks explained (bunny-hopping, wall-running, and zig-zagging)'']<br />
{{YouTubeEmbed|v3zT3Z5apaM}}<br />
Matt's Ramblings, [https://www.youtube.com/watch?v=rTsXO6Zicls ''Strafe-jumping physics explained'']<br />
{{YouTubeEmbed|rTsXO6Zicls}}

== Source ports ==
Since the release of the [https://github.com/id-Software/Quake Quake source code], there are various source ports available:
* [https://quakespasm.sourceforge.net/ Quakespasm] - Limit-breaking source port focused on vanilla accuracy. Fork of the long-deprecated FitzQuake. Actively maintained.
** [https://github.com/Shpoike/Quakespasm Quakespasm-Spiked (QSS)] - Fork of Quakespasm that can run at higher frame rates than 72FPS without breaking physics.
*** [https://github.com/Novum/vkQuake vkQuake] - Fork of QSS running on Vulkan, with additional features. No longer maintained as of 9 May 2023.
* [https://github.com/lipsanen/TASQuake TASQuake] - a port which allows to record inputs for tool assisted speedrunning (TAS) as {{L|.qtas}} files.
* [https://github.com/fte-team/fteqw FTEQW] - Source port focused on standalone game development. Notably includes [[Wikipedia:Clean room design|clean-room]] implementations of {{gldsrc}} file formats ({{L|BSP (GoldSrc)|BSP}}, {{L|MDL (GoldSrc)|MDL}}, {{L|WAD|WAD3}}, {{L|SPR|HLSPR}}). Actively maintained.

==External links==
* [https://github.com/id-Software/Quake id Software's GPL Source Release in 2012] - commits are without proper authors, edit history, maps...
* [https://rome.ro/news/2016/2/14/quake-map-sources-released Quake Map Sources] - Original uncompiled {{L|.map|MAP}} source files for all base game maps, including an unreleased map
** [https://valvedev.info/tools/quake-map-sources-and-original-wads/ Quake Map Sources and Original WADs] - Same as above, but with the necessary {{L|WAD}} texture files as well.
* {{pcgw|Quake}} and {{pcgw|Quake_(2021)|Quake (2021)}} on the PCGamingWiki
* {{Wikipedia|Quake (video game)}}
* {{Wikipedia|Quake engine}} and {{Wikipedia|Quake engine#Games using the Quake engine|Games using the Quake engine}}
{{Quake games}}
{{ACategory|Non-Steam Applications}} 
{{ACategory|GoldSrc}}