Operation: Harsh Doorstop is the ultimate, free to play, tactical shooter sandbox. Play singleplayer, multiplayer, or co-op modes and explore thousands of community-created maps, weapons, and vehicles via the Steam Workshop. Created by developers of the cancelled Project Reality 2 project.
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No game lists Operation: Harsh Doorstop as one of its co-op favourites yet, so here are the closest matches by Steam tags instead.
Experience true combat gameplay in a massive military sandbox. Deploy with a wide variety of single- and multiplayer content, a massive arsenal of modern weapons and vehicles, and limitless opportunities for content creation. Authentic, diverse, open - Arma 3 sends you to war.
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Insurgency: Sandstorm is a hardcore tactical FPS built on lethal close-quarters combat and ruthless intensity. Every bullet count, every step matters, and teamwork is your only path to survival in the brutality of modern warfare.
From one of the developers behind the original Rainbow Six® and Ghost Recon® games, comes a thinking-man's first-person shooter featuring in-depth character and weapon customization. Take your time. Think ahead. Get the job done.
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Army Troop is an old-school PvP World War 2 online first-person shooter. Reminding you of the good old days World War games.
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Squad is a tactical FPS that provides authentic combat experiences through teamwork, communication, and realistic combat. It bridges the gap between arcade shooter and military realism with 100-player battles, combined-arms warfare, and base building.
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Engage in massive combined arms battles, create and curate combat missions in real time, and shape your experience with endless community mods. Deploy into the Cold War and experience the most authentic and immersive military sandbox ever created.
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taCam is a tactical multiplayer FPS with a realistic bodycam perspective, fluid gunplay, and extensive weapon customization. Engage in intense combat across modes like Team Deathmatch and Skirmish, using teamwork and strategy to dominate the battlefield.
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Zero Hour is a tactical FPS with online team-based game play that takes place in a variety of fictional locations interpreted in Bangladesh with Real-life scale & resource management. It brings a grounded, close quarter combat experience to the game.
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Experience close-quarters battles in iconic WWII settings. Defend the line, storm the beach, torch the enemy, or use a radio to call in fire support. Day of Infamy is a teamwork-oriented shooter that will keep you on your toes and coming back for more with its diverse game modes and authentic arsenal.
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