Shrak for Quake

Shrak (branded as Shrak for Quake) is an unofficial commercial total conversion mod developed for id Software's Quake by Quantum Axcess. It was released on January 30, 1997.

Being a total conversion, it features completely new story, levels, weapons, and enemies. Shrak is unique in that it uses some of Quake's original textures by patching them into its pak file on first install using its included ST.EXE. Because of this, properly playing it in modern ports requires running said program in a DOS emulator (such as DOSBox) or using a fan-made mini-patch (available here).

Story
Humanity has lost control over Earth... Mutants that were created during previous conflicts have completely gotten out of control. Humans were forced to flee from the planet and watch from the Moon as their home was overrun by mutants and the ones who joined them.

Now, the situation has become even more dire. Unorganized mutant actions have became organized – someone or something named "Shrak" has united them and started rebuilding Earth as a gigantic military base.

You were sent back to Earth in order to perform reconnaissance on "Shrak" and its army and report back.

Except that your ship has crashed and will not be flying you back anytime soon.

Levels
The game features a hub level from which you depart to different levels and to which you may return after completing them.

List of levels:
 * Introduction
 * The Hub
 * The Under Dwellings
 * Toxic Waste Plant
 * Den of Denial
 * The Ship Yard
 * Wreck Age
 * Death Glow
 * Remnants
 * Nightfall
 * Catharsis
 * Shrak's Domain
 * The Gauntlet (secret level)

Deathmatch Levels

 * Gothic Garden
 * Shred Shrine
 * The Beckoning
 * The Rig
 * Quantum Base

Enemies
Shrak's minions include both mutants and humans who have defected to Shark's army in order to survive.

List of monsters: List of bosses:
 * Zed (ogre-like brute with Double-Barrelled Shotgun)
 * Firecrawler (giant maggot that spits fireballs)
 * Ohmi (human with weak blaster)
 * Viscor (two-headed berserker with devastating melee attack)
 * Strike (floating eye that can be dangerous even after death)
 * Rukasriot (heavily armed and armored human)
 * Lightsear (a rather humanoid-like scorpion beast with long-ranged electric attack)
 * Gorok (grenade-spitting spider)
 * Shrak

Weapons
List of weapons:


 * Utility Vest (contains flares, proximity mines, and grappling hooks)
 * Proton Laser (a rather inaccurate semi-automatic laser pistol; your starting weapon)
 * Double-Barreled Shotgun (almost identical to its Quake counterpart)
 * Uzi (rapid-fire weapon that is almost as powerful as a Super Nailgun)
 * Foe-to-Friend Converter (short-ranged energy blast that forces the affected enemy to attack other monsters)
 * Inflator (shoots gas darts that cause enemies to balloon up and then burst)
 * Rocker Launcher (very similar to its Quake counterpart)
 * HFB 9000 (shoots out a ball that makes enemies bounce themselves to death)