KEY FEATURES OF DCS WORLD 2.5 OPEN BETA:

The most realistic Free-to-Play digital battlefield ever.
Fly the TF-51 Mustang and Su-25T attack jet for free!
Includes a free 117,000 sq nautical mile Caucasus map with millions of buildings and trees.
Includes 156 free and fully operational weapons systems, 105 ground vehicles, 19 ships and 84 AI-controlled aircraft.
Both hardcore realistic and casual gameplay modes and options available.

Read more about it here[www.digitalcombatsimulator.com]