Don't think I've had a gaming experience like that since, including with the standalone version
Some of the best gaming moments were duelling snipers on the hill north of Electrozavodsk in DayZ, sneaking from town to town between the two airfields, or on the Arma 2 Warfare mod running convoys through the woods to try to flank the other team.
The Arma 3 maps were definitely technically impressive, but bigger is not always better.