Top Alternatives to Battlefield (Series)

TrueCombat: Elite & CQB is a free and open-source tactical first-person shooter mod for the game Enemy Territory, emphasizing realistic combat simulation and intense team-based gameplay in modern-day scenarios.

Ace of Spades: Battle Builder is a unique blend of voxel-based sandbox construction and fast-paced first-person shooter combat. Build intricate fortifications and environments, then engage in destructive battles against other players or hordes of zombies. Creativity and combat skills are equally crucial for victory.