Sites like Instant Gaming or G2A often sell Steam keys for the Apex edition at discounted rates. System Requirements for Arma 3 Apex
Bohemia Interactive occasionally hosts "Free Weekends" on Steam, allowing players to download and play the full game for a limited time. Purchasing Options & Discounts download-arma-3-apex-pc-game-full-version-free
Arma 3 and its Apex expansion are not officially available as a free download for the full version. The game is a and typically requires a purchase. Sites like Instant Gaming or G2A often sell
Owners of the base Arma 3 game receive all major platform updates for free, which include new features and enhancements even if you don't own the Apex expansion. The game is a and typically requires a purchase
You can subscribe to official CDLCs on the Steam Workshop and join multiplayer servers that use them. While you can use the weapons and gear, you will see in-game watermarks and face restrictions like only being able to be a passenger in vehicles unless you own the DLC.
Before downloading, ensure your PC meets the minimum requirements : Windows 10 (64-bit) Processor: Intel Core quad-core or AMD Athlon quad-core Memory: 8 GB RAM