https://www.humblebundle.com/arma-bundle

JUST ONE DAY REMAINING!

For $1 you get:

Arma: Cold War Assault (Operation Flashpoint with a different name and some updates)
Arma: Gold Edition
Arma Tactics

For $13.85 you get:

Arma 2
Arma 2: Operation Arrowhead
Arma 2: British Armed Forces Add-on
Arma 2: Private Military Company Add-on
Arma 2: Army of the Czech Republic Add-on
And the Arma games in the lower price range

For $15 you get:

Arma 3
Arma 3 Karts Add-on
And the Arma games in the lower price ranges


You get to choose what percentage of your money goes to Bohemia Interactive (the developer of Arma), American Red Cross (almost every time a different charity for different bundles) and how much goes to Humble Store.

You won't get the more expensive DLC for Arma 3: Apex, Helicopters or Marksmen, but at $15 just the base game along with pretty much all previous Arma games is a very good deal.