Chex Quest 3

Chex Quest 3 is a 2008 computer game which runs on the ZDoom engine. It was developed by Charles Jacobi, who was the art director and lead artist for and worked on the original Chex Quest. Charles credits Mark Quinn aka "Boingo the Clown" for giving him the motivation to work on Chex Quest again. The completion of this project by the original author, after failed fan-created attempts and a ten-year wait, was a huge surprise and Chex Quest 3 was well-received, earning one of the 2008 Cacowards.

Chex Quest 3 contains slightly updated versions of the maps from Chex Quest (episode 1) and Chex Quest 2 (episode 2), in addition to its new maps. However, it is not compatible with mods created for the original Chex Quest as it modifies several actors, including changes to their editor numbers.

New content include several textures and sprites, new monsters, as well as the five maps from Episode 3.

All maps are in the Hexen map format, and the WAD contains ZDoom-style lumps: DECORATE, MAPINFO, SNDINFO, ANIMDEFS, TEXTCOLO, LOCKDEFS, and LANGUAGE; therefore Chex Quest 3 can only be played on a ZDoom-compatible port.

Episode 1: Rescue on Bazoik

 * E1M1: Landing Zone
 * E1M2: Storage Facility
 * E1M3: Laboratory
 * E1M4: Arboretum
 * E1M5: Caverns of Bazoik

Episode 2: Terror in Chex City

 * E2M1: Spaceport
 * E2M2: Cinema
 * E2M3: Chex Museum
 * E2M4: City Streets
 * E2M5: Sewer System

Episode 3: Invasion!

 * E3M1: Central Command
 * E3M2: United Cereals
 * E3M3: Villa Chex
 * E3M4: Provincial Park
 * E3M5: Meteor Spacecraft

Engine
Chex Quest 3 includes a separate executable, called. This is a renamed build of ZDoom with a custom name and icon made by Aroenai, and contains, according to the Chex Quest 3 readme file, "appropriate changes to flemoids, projectiles, strings and more". The changes are however rather trivial in nature, with regular ZDoom officially supporting the game as an IWAD starting at version 2.3.0.

itself is based on ZDoom version 2.3.1 (r1480) dated June 23, 2009.

Projects based off Chex3.exe
Despite being practically the same as regular ZDoom, the Chex Quest community created various projects requiring the official ZDoom based :
 * Chex Quest 2.5 - A project to bring the unofficial Chex Quest 3 release (an illegal version based on Doom Legacy) to the official release, revamped and enhanced, and with the illegal elements replaced.
 * Community Quest - A mapset, made in the same vein as the Community Chest series.
 * The Stick Figure - A total conversion, where the player is a stick figure and needs to kill all enemies and the boss to save stickkind.

GZDoom version
The author of the Chex Quest 3 icon, Aroenai, made a semi-official replacement executable with the same name. Unlike the official executable, Aroenai's version is actually more recent and is based off GZDoom. His version of is based on GZDoom version 1.4.0 (r713M), corresponding with ZDoom 2.4.0 (r2096), dated January 5, 2010. It includes several enhancements over the official version:
 * Cheats fixed (done in the official v1.4)
 * All other tweaks made in the official chex3.exe
 * Player options screen has a green background instead of red
 * Player's skin is blue by default
 * Texture filtering disabled by default in OpenGL mode (no blurry sprites)
 * Demos play at the title screen
 * Tweaked the icon a bit
 * Dropped the 32 bit icons because they're identical to the 256 ones (GZDoom's icon doesn't have 32 bit icons either)
 * Smoothed out 48x48 a tiny bit
 * 16 color icons now match the original CQ1 and CQ2 icons