Games like Day of Defeat: Source on Steam
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Serious Sam Classic: The First Encounter
Serious Sam is a high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Year 2001!
Deadfall Adventures
Deadfall Adventures is an action-driven first-person shooter, spiced up with elements from action-adventure games. Become an adventurer, hunt for treasures, explore unknown regions of the world and rescue the damsel in distress from the clutches of enemies, both earthly and not-so-earthly.
Splitgate 2 Beta
Splitgate 2 is the only free-to-play shooter with portals, delivering next-level gunplay, fluid movement, and a constantly evolving experience, featuring a new Battle Royale where you can portal between unique worlds. Welcome to the future of sport.
The Riflemen
Multiplayer first-person shooter with classic WW2 bolt-action rifles. Tight battles between two teams with up to 5 players in each, lots of unique arenas, game-changing weapon drops, different game modes, and lots of customization options. You'd better not miss a shot!
Onward
Onward is the most immersive tactical VR shooter. Join your squad for a wide variety of competitive PvP, co-op PvE, and solo game modes, including intense multiplayer battles or 4-player co-op missions. Realistic weaponry and combat mechanics will push your survival and combat skills to their limit
STAR WARS™ Jedi Knight: Dark Forces II
Jedi Knight: Dark Forces II picks up where the award-winning Dark Forces™ game left off...with even more features and firepower in dazzling 3D graphics. As Kyle Katarn, you must acquire a lightsaber and learn the ways of the Force to become a Jedi Knight.
Sniper Elite V2 Remastered
In the dark days of the end of World War 2 amidst the ruins of Berlin, one bullet can change history… Elite sniper Karl Fairburne returns to the front line in the remaster of this award-winning stealth-action experience. Packed with new features, contemporary visuals and definitive content.
Aliens vs. Predator™
Survive, hunt and prey in the deadly jungles and swamps in distinctly new and thrilling first person gameplay.
Zula Global
Zula is an intense free-to-play FPS in which you can play cooperatively with your teammates to overthrow the enemy side. You can enjoy new content weekly and receive gifts every day. Variety of maps and weapons from the real world so you can immerse yourself 100%.
Arma 2: Operation Arrowhead
Three years after the conflict in Chernarus, portrayed in the original Arma 2, a new flashpoint explodes in the Green Sea Region. Coalition forces led by the US Army are deployed to Takistan to quickly restore peace and prevent further civilian casualties.
Sniper Elite 4
Discover unrivalled sniping freedom in the largest and most advanced World War 2 shooter ever built. Experience tactical third-person combat, gameplay choice and epic longshots across gigantic levels as you liberate wartime Italy from the grip of Fascism.
Quake II
You are humanity’s last hope to stop the Strogg, a hostile alien race waging war against Earth. Play this military sci-fi FPS, now upgraded for modern platforms with improved visuals, new campaign content, online multiplayer/co-op, and more.
TrenchesWIP
Multiplayer combined-arms first-person shooter set in an alternate history. Build and upgrade bases, harvest resources, construct defenses, purchase weapons and vehicles to overcome the enemy!
Sniper Elite
As World War II draws to a close, the first covert battles of the Cold War begin. Caught in the life and death struggle between Soviets and Germans in war-torn Berlin, you control the fate of a lone American OSS Sniper.
Quake 4
As part of the elite Rhino Squad, you must spearhead Earth’s military invasion of a hostile alien homeworld. But, in this desperate war for humanity’s survival against an unrelenting enemy, you may discover that the only way to defeat them...is to become one of them.
GOAT OF DUTY
Goat of Duty is a fast-paced multiplayer shooter where goats armed to the horns bleat face to face in a relentless deathmatch. Ram and troll your friends, own the craziest goatstumes, and put your skills to the test in the quirkiest FPS ever. Are you ready to become the GOAT of goats?
PlanetSide 2
PlanetSide 2 is an all-out planetary war, where thousands of players battle as one across enormous continents. Utilize infantry, ground and air vehicles, and teamwork to destroy your enemies in this revolutionary first-person shooter on a massive scale.
Serious Sam Classic: The Second Encounter
Serious Sam Classic: The Second Encounter is a high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Month February 2002!
Puppet Master: The Game
This free-to-play online multiplayer game celebrates the series' 30-year legacy. Revisit iconic locations, select from a large roster of playable characters from the movies, and play a variety of online multiplayer game modes, each inspired by the Puppet’s many adventures.
DOOM 3
A demonic invasion has overwhelmed the Union Aerospace Corporation's Mars research facility. As one of only a few survivors, you must fight your way to hell and back against a horde of demons in this award-winning horror/action FPS and reimagining of the original DOOM.