VBS2 v2.0 is VBS2 v1.x ported to the Real Virtuality 3 game engine, which is the game engine behind the ArmA2 and ArmA2: Operation Arrowhead computer games. From a user interface perspective it is exactly the same as VBS2 v1.x, however there are many key improvements both as a result of the newer game engine as well as new items funded and driven by military customers.