It has an extremely healthy player count and modding scene, as well as robust level editors that allow people to make essentially any scenario they can think of.
I'd recommend buying the Apex Edition (Includes half of the dlc) during a steam sale, as the game goes on sale semi-frequently.
The game is very good at portraying combined-arms warfare, and has many roles, from your standard infantryman, to tank crew, and even gives you artillery as well as piloting roles.
SOME GAMEMODES:
Zeus: 1-2 people take their role as the zeus, and create a mission in realtime for the rest of the players.
KOTH: PVP Take control of a city with your team and hold it until you win.
Wasteland/Epoch: Remember DayZ?
Altis Life: It's like darkrp but on a fucking huge map and worse
Arma is very CPU intensive and seems to be bipolar on whether or not it wants to work for some people, it works on my machine but it might fuck up on yours.
RECOMMENDATIONS:
- Play with a Unit. A unit is essentially a closed community of gamers who schedule their time. If you have a unit you want to shill, you can do that below.
- Install Teamspeak. A lot of units use a mod called Task Force Arrowhead Radio, which allows you to use more realistic radios in game, and it goes through Teamspeak.
- Play through the VR tutorials, they teach you a lot about the game and it's systems and really do good at giving you a basic idea of how to properly shoot things.
it's rated M for mature guys make sure you're over 18