video game, Arma 3, military simulation, soldier, tactical gear, rifle, first-person perspective, realistic graphics, open world, dynamic weather, day and night cycle, multiplayer, free download, special promotion, digital distribution platform, Steam, limited time offer, immersive gameplay, strategic planning, team coordination, voice communication, high-resolution textures, detailed environment, expansive map, vehicle combat, aerial dogfights, marine operations, modding community, user-generated content, online community, intense firefights, soft natural lighting, realistic shadows, high-fidelity sound effects, 3D spatial audio.