Arma 2 + Operation Arrowhead, DayZ ...

Main Information:
Game name: Arma 2 + Operation Arrowhead, DayZ ...
Ganre: Action, PC Games, Shooter
Developer: Bohemia Interactive Studios
Release date: 2009
Interface language: EN / Multi
Voice language: EN / Multi

Arma 2 (2009): Building on 10 years of constant engine development, ARMA II boasts the most realistic combat environment in the world. It models real world ballistics & round deflection, materials penetration, features a realtime day/night cycle and dynamic wind, weather and environmental effects. The simulation of a combat environment is so effective, the engine forms the basis for training simulators used by real armies the world over.
Although ARMA II is set in the fictional ex-soviet state of Chernarus the gameworld is actually a 225 square kilometer chunk of the real world! ARMA IIs highly detailed landscape is a meticulous facsimile of real terrain, modeled using extensive geographical data. This recreated region is brought to life with spectacular environmental effects and populated with dynamic civilian settlements and wildlife. Wild animals roam the atmospheric forests while the people of Chernarus try to live out their lives among the war-torn streets.
The 27th U.S. Marine Expeditionary Unit have been deployed to the former soviet country of Chernarus in this third installment in the series of award winning PC war simulators from Bohemia Interactive, creators of Operation Flashpoint*: Cold War Crisis and ARMA: Combat Operations.
Force Reconnaissance Team Razor are among the first to fight. This elite five-man team are about to fall down the rabbit hole, trapped in a war not only for control of the country, but the hearts and minds of its people. With the might of the USMC offshore and the Russians anxiously watching from the north, the stakes couldnt be higher. The fate of Chernarus is balanced on a razors edge...

Arma 2: Operation Arrowhead (2010): Three years after the conflict in Chernarus, portrayed in the original Arma 2, a new flashpoint explodes in the Green Sea Region. Coalition forces led by the US Army are deployed to Takistan to quickly restore peace and prevent further civilian casualties.
You will enlist into various roles within the US Army, from basic infantrymen, through special operatives, to pilots and tank crew in this new installment in the award winning line up of military simulators for PC from Bohemia Interactive.
Building on 10 years of experience and constant engine development, Arma 2: Operation Arrowhead boasts the most realistic combat environment in the world. It models real world ballistics & round deflection, thermal imaging, materials penetration, features a realtime day/night cycle and dynamic wind, weather and environmental effects.

NOTE:
Arma 2: Operation Arrowhead is a standalone product and does not require the original Arma 2.

ArmA 2: British Armed Forces: In summer 2012, less than two months after Operation Arrowhead successfully routed the Takistani military regime, NATO coalition forces face a large-scale outbreak of guerrilla insurgency.
A mechanized force of British troops, with support elements of US Army TF Knight, are about to deploy and embark upon a large scale counter-insurgency that will define the future of the coalition presence in Takistan.

Arma 2: Private Military Company: One year after British and coalition armed forces successfully quelled the insurgent uprising in Takistan, described in Arma 2: British Armed Forces, the NATO Green Sea deployment is in the process of a strategic drawdown of its combat troops in the region. Private military contractors shoulder the burden of the increased workload, with competition rising between the multinational organisations for lucrative security contracts. Private Military Company, ION, Inc. (formerly Black Element), successfully bid for a contract - codenamed Black Gauntlet - to provide security for a UN investigation team as they seek to piece together information regarding Takistans abandoned nuclear weapons program.

Arma 2: DayZ (2013): Join the scores of desperate survivors in the free "Arma 2: DayZ Mod",
the award-winning and massively popular persistent multi-player mod created by Dean Rocket Hall for "Arma 2: Combined Operations"!

Go Solo, team up with friends or take on the world as you choose your path in this brutal and chilling landscape using whatever means you stumble upon to survive. However the infected are not your only threat. You will be forced to fight for your life against other survivors, over rare necessities like food and water, in your constant battle to survive in this wicked world.

CPU: Intel Core 2.4 GHz or AMD Dual-Core Athlon 2.5 GHz

RAM: 1 GB

OS: Windows XP or Windows Vista

Video Card: Nvidia Geforce 8600GT or ATI Radeon 3650 or faster with Shader Model 3 and 512 MB VRAM

Free Disk Space: 10 GB

Recommended System Requirements

CPU: Intel Core i5 or AMD Athlon Phenom X4 or faster

RAM: 2 GB

OS: Windows 7

Video Card: Nvidia Geforce GTX 260 or ATI Radeon HD 5770 or faster with Shader Model 3 and 896 MB VRAM

Free Disk Space: 20 GB