Rex Research Institute

Rex Research Institute is a fictional organization in Counter-Strike Online.

Background

The Rex Research Institute is an organization of doctors and scientists who were creating various types of medicine in an attempt to prolong life. Gradually, they changed their objective into trying to find a way to make humans immortal. Due to their continuous experiments on living things, their plans backfired and had instead created a dangerous virus, dubbed the Rex Virus. This caused humans to turn into the undead, the zombies. The zombies managed to escape from the lab, during the chapter Chaos, and started infecting the others. This was also the place where Jennifer was captured and kept alive as a human experimental subject.

Structure

There are several maps showing this institute:

Rex - The main laboratory where the experiments took place, the Terrorists threaten to destroy the lab for political purposes. (managed to destroy it insignificantly)
Roof - The rooftop battle, Counter-Terrorists were dispatched by the government to engage the Terrorists that were escaping from the institute after the bombing in the main lab. There are no signs of any zombies yet.
Abyss - Rex Research Institute's first view after the bombing incident, showing the basement of Rex. Zombies were found. Having no choice, the Counter-Terrorists must combine their forces with the Terrorists to survive the zombie apocalypse.
Abyss2 - Search-and-rescue unit was dispatched to find and rescue the survivors (the players). They helped by sending their weapons to help the survivors combat the evolved zombies.
Abyss3 - One year after the outbreak of zombies, zombies are growing stronger and has the ability to revive. A unit was dispatched with one goal, to eliminate all the remaining zombies.
Chaos - The survivors must find a way out of the maze-like Rex basement by following orders from the Captain Choijiyoon.
Cube - The humans were forced to play a game of death which was planned by Dr. Rex in a simple lab. They were separated into two teams, red team and blue team, and have a race of killing zombies. The humans will try to be the survivors by whatever means.

Products

Rex Research Institute has developed these weapons and products after the zombie incident:

Supply Box

Dual Desert Eagle

Main article: Dual Desert Eagle

Freely supplied to humans in supply boxes in Zombie battlefields except the first battle and give high damage to zombies.

Main article: Dual MP7A1

Freely supplied to humans in supply boxes in Zombie battlefields, having light weight and has high rate of fire although it has weak penetration power.

Main article: AK-47 60R

Freely supplied but rarely found to humans in supply boxes in Zombie battlefields, very powerful against any zombies. It also has high rate of fire, high accuracy, and high magazine capacity for an assault rifle.

Skull Series

Main article: Skull-7

An anti-zombie machine gun based on the FN Minimi that fires 120 rounds of 5.56mm Anti-zombie cartridge. It inflicts critical damage to zombies; with the special bullets designed to penetrate multiple zombies.

Main article: Skull-5

An anti-zombie sniper rifle based on the M14 EBR that fires 24 rounds of 5.56mm Anti-zombie. It is designed to engage zombies from a distance due to its rate of fire and firepower.

Main article: Skull-9

A melee battleaxe built with special metal alloys that have anti-zombie properties, it is extremely powerful in engaging zombies if they are within range.

Main article: Skull-1

A break-frame double-action revolver designed for anti-zombie purposes, it fires 7 rounds of .50 Anti-Zombie and is possibly based on the Russian-made MP412 REX.

Main article: Skull-3

An anti-zombie submachine gun based on the .45 caliber HK UMP45 that fires 35 rounds of .45 Anti-Zombie. It fires 70 rounds of .45 Anti-Zombie once it is dual-wielded.

Main article: Skull-11

An anti-zombie combat shotgun based on the USAS-12 that fires 28 rounds of 12 Gauge Anti-Zombie shotgun shells. It is also widely used in middle-ranged combat due to having an enhanced slug mode as its secondary fire mode.

Main article: Skull-4

An akimbo assault rifle based on the M14 EBR. This weapon is fed with 48 rounds of 5.56mm AZ that deal critical damage to zombies. It has a usable scope that makes it useful in long range.

Main article: Skull-8

An anti-zombie machine gun fed with 120 rounds of 5.56mm AZ ammunition. It is attached with ax axe bayonet under its barrel for melee combat. Its primary fire has superior penetration towards zombie's armor.

Main article: Skull-6

An anti-zombie machine gun fed with 100 rounds of 5.56mm AZ and equipped with a sniper scope for long range engagement. Its bullets develops superior penetration and do deadly damage to zombies.

Ammunition

5.56 AZ (a cartridge based on the 5.56mm which for engaging zombies. It is chambered in Skull firearms only)
.50 AZ (a high-caliber pistol cartridge based on the .50 Action Express which designed for anti-zombie purposes, used by Skull-1)
.45 AZ (a pistol caliber based on the .45 ACP, used by Skull-3)
12 Gauge AZ (a shotgun cartridge used by Skull-11)

Known operatives

Dr. Rex Steve

Main Article: Dr. Rex

Dr. Rex Steve is the mastermind behind the zombie outbreaks, and remained hidden until he revealed himself in Envymask chapter to the players, saying that someone else is continuing his research to make super soldiers.

Trivia

It is rumored that the Rex Research Institute is located somewhere in Cuba. The players could see posters that are written in Spanish in Lost City map. Besides, Dead End map takes place in Havana, the capital city of Cuba.
Even though the Skull Series was invented by this institute, Dr. Rex was not the one who created those weapons.