"showcase missions" are a part of it; Infantry, Vehicles, SCUBA and Helicopter.
There are a "limited subset of weapons and vehicles," with two multiplayer scenarios, the scenario editor and mod support. The 20 km² island of Stratis is home to the Arma 3 Alpha.
Stratis is but a stone’s throw from the main slab of land that is Altis, which is a hefty 270 km². This is a "big milestone" for Bohemia, and they're eager for fans to jump in.
The alpha is accessible to those who slap cash down for the Arma 3 Alpha (€24.99/£19.99/$32.99) or Arma 3 Digital Deluxe Edition (€39.99/£34.99/$49.99) on Steam. There's also afor those who want to help Bohemia Interactive even more which includes all the Digital Deluxe goodies plus all future Arma 3 DLC.
"The Arma 3 Alpha is a big milestone in the project's development," said co-creative director Jay Crowe. "Testing early and often puts us on the right track towards improving performance, stability and delivering on our goal of creating a robust final release. It's also a big opportunity to get the game in the hands of our passionate community, which enables them to start work on their own creations, tailored to the fourth generation of the Real Virtuality engine.”
An 'Alpha Lite' will become available March 14th but does not contain multiplayer or modding support. It's a "free, limited version" only accessible through an invitation given by someone who's bought the Arma 3 Alpha, however some will also be "randomly distributed" through Arma 3 social channels and giveaways.