How to Download Arma 2: Operation Arrowhead

1. Click on the Arma 2: Operation Arrowhead download button below.
2. Choose "Install" to install the game on the windows steam client.
3. Follow the on-screen prompts
4. Let it download the Full Version.
5. Once a game is downloaded, use the Windows Steam Client to play the game.

=== Download Game ====

Download for pc →

This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.

1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."

Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.

Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.

2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.

3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.

4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.

Windows Pc Requirements

Minimum:

• OS: Windows XP or Windows Vista
  
• Processor: Intel Core 2.4 GHz or AMD Dual-Core Athlon 2.5 GHz
  
• Memory: 1GB
  
• Graphics: Nvidia Geforce 8600GT or ATI Radeon 3650 or faster with Shader Model 3 and 512 MB VRAM
  
• DirectX®: DirectX 9.0c
  
• Hard Drive: 10 GB free space
  

Recommended:

• OS: Windows 7
  
• Processor: Intel Core i5 or AMD Athlon Phenom X4 or faster
  
• Memory: 2GB
  
• Graphics: Nvidia Geforce GTX 260 or ATI Radeon HD 5770 or faster with Shader Model 3 and 896 MB VRAM
  
• DirectX®: DirectX 9.0c
  
• Hard Drive: 20 GB free space
  

Linux Requirements

No minimum requirements!!
No maximum requirements!!

Mac Requirements

No minimum requirements!!
No maximum requirements!!

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.

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.

Key features:

• NEW PLAYABLE CONTENT: New story campaign for both SP and MP gameplay. Wide range of new tutorials, single scenarios and multiplayer modes.
  
  
  
• MASSIVE GAME WORLD: Three brand new Central Asia-style large maps including expansive urban, desert and mountainous terrain featuring a fully destructible and interactive environment.
  
  
  
• ULTIMATE WAR EXPERIENCE: Fully integrates with the original Arma 2 for unmatched warfare simulation.
  
  
  
  
• UNIQUE GAMEPLAY ELEMENTS: Detachable backpacks with equipment, advanced weapon optics, material penetration modelling, remote real-time simulation of Unmanned Arial Vehicles (UAV), freedom of decision and repercussive actions.
  
  
• EXTRA UNITS AND VEHICLES: Multiple factions for all sides including US Army, United Nations, Takistani Army and Guerrillas making a collection of 300+ new units, weapons and vehicles.
  
  
  
• MISSION EDITOR: Design your own missions by the intuitive, easy-to-use mission editor and become part of one of the biggest and most creative PC gaming community ever.
  
  
  
• GAME MODIFICATION: Create Your own custom game content with complete editing tools suite (freeware SDK kit) and modify the game in ways where the only limitation is Your own imagination.
  
  
  
• EXTENSIVE MULTIPLAYER: Play the campaign missions in cooperative mode or join duty in the massive multiplayer battles with up to 50 players.
  
  
  
  
• CHEAT PROTECTION: Optional anti-cheat BattlEye (http://www.battleye.com) available to help secure dedicated servers. In addition BE adds 'RCON' (remote control) for game's dedicated server software.
  
  
  
• DEDICATED SERVER: To support smooth multi-player experience there is 'dedicated server software' available for Windows (included with game) and Linux (download-able from game's website).
  

• PC Gamer US - 82% - EDITOR'S CHOICE - ARMA 2 Operation Arrowhead - Redeployed
  
  August 2010 issue - Thermal options and other combat toys make Operation Arrowhed the most realistic wargame sim available today.
  
• bi-tech.net - 80% - RECOMMENDED - ARMA 2: Operation Arrowhead Review
  
  29.06.2010 - Operation Arrowhead is a well priced way of enhancing and expanding one of the PC's most challenging and tactical FPS games.
  
• Eurogamer.net - 70% - ARMA 2: Operation Arrowhead Review
  
  30.6.2010 - ...you'll undertake special forces missions, fly helo gunships, command tanks, rescue hostages, and do a host of other soldierly stuff. As you'd expect from the series, the battlefields are usually vast, the realism level high, and the tactical options abundant.