You don't need to run a third-party client to start the game.
Serious Sam 4 takes players back to the beginning of the Mental invasion. As a prequel, it explores the early days of the Earth Defense Force. The gameplay stays true to the series’ roots: massive arenas, hundreds of enemies on screen at once, and a relentless "run and gun" philosophy. Serious Sam 4 Deluxe Edition v1.09-GOG
Better texture streaming and lighting effects. Why Choose the GOG Version? You don't need to run a third-party client to start the game
Significant reduction in crashes during heavy combat. The gameplay stays true to the series’ roots:
Play the single-player campaign entirely offline.
The Deluxe Edition is designed for the ultimate fan. It goes beyond the standard game to offer a more immersive and stylized experience. The full Serious Sam 4 campaign.
The game introduces the Legion System, allowing for battlefields populated by thousands of enemies simultaneously. This creates a sense of scale rarely seen in the first-person shooter genre. Players must utilize a massive arsenal of classic weapons—like the Double Shotgun and the XL2 Laser—to survive the onslaught. Features of the Deluxe Edition