ArmADemo Build 5110 allows to play the demo as a dedicated server host. In order to use this executable as dedicated server you need to start it with commandline parameter

-server

See http://community.bistudio.com/wiki/Armed_Assault:Dedicated_Server

for more information about usage of ArmA Dedicated servers.

ArmA is a first person tactical military shooter with large elements of realism and simulation. This game features a blend of large-scale military conflict spread over large areas alongside the more closed quarters battle. The player will find himself thrust in the midst of an engaging and expanding storyline, fighting against smart, aggressive enemies who will continually provide a challenge over a massive landscape.

* Story driven singleplayer campaign
* Large scale multiplayer battles
* More than 30 modern weapons
* Vast environment to explore, fictional island Sahrani
* More than 30 modern vehicles
* DirectX 9 engine with real world dynamic lighting and weather effects
* Built-in mission editor and support for user made content

This is demo version of ArmA and it covers only small part of the full game.

-The environment:
Southern part of Sahrani
*Full Game: Includes also distinguish and larger Northern Part*

-Multiplayer Modes:
Cooperative (1-8 players)
Capture the Flag (1-16 players)
Capture the Island (1-60 players)
*Full Game: 16+ multiplayer modes*

-Single player:
None
*Full Game: story driven single player campaign, training missions and single missions*

- Editing:
None
*Full Game: mission wizard, mission editor, built in scripting language accessible via external text editors, full support for user made addons and mods*

- Vehicles and Weapons:
Basic vehicles and weapons were selected for the demo
*Full Game: 30 different weapons and 30 different vehicles to play with*


II. SYSTEM REQUIREMENTS
-----------------------

In order to install and play the ArmA Demo, your system must meet
or exceed the following minimum system requirements:

Operating system: Windows XP with latest service pack installed, DirectX 9.0c August 2006 edition (included with demo), OpenAL (included with demo)
CPU: Intel Core/Pentium 4/AMD Athlon 2 GHz or equivalent (3 GHz recommended)
RAM: 512 MB (1 GB Recommended)
Video Card: 128MB DirectX compliant video card, Pixel shader 2.0 and above, only Ati and Nvidia chipsets are supported (256 MB of memory recommended)
Sound Card: OpenAL compatible (full OpenAL hardware acceleration capable card recommended)
Hard Drive space: 2 GB of free space is required to install and play the demo
Internet connection: 256kbit Cable/DSL connection