Games Like Alien Swarm: Reactive Drop

HELLDIVERS™ is a hardcore, cooperative, twin stick shooter. As part of the elite unit called the HELLDIVERS, players must work together to protect SUPER EARTH and defeat the enemies of mankind in an intense intergalactic war.

Why similar: Twin Stick Shooter 33.7%, Top-Down Shooter 24.6%, Co-op 21.9%, Sci-fi 7.2%, Top-Down 6.6%

Why You'll Like It: This is the definitive top-down squad shooter that mirrors the tactical depth and chaotic bug-killing gameplay of the seed game.

Co-operative multiplayer game and complete code base available for free.

Why similar: Co-op 18.3%, Aliens 17.2%, Top-Down Shooter 12%, Class-Based 10.5%, Shooter 7.6%

Why You'll Like It: The original predecessor to Reactive Drop, providing the same core mechanics and atmosphere that defined the series.

Deep Rock Galactic is a 1-4 player co-op FPS featuring dwarven space miners, procedurally-generated destructible environments, and endless hordes of alien monsters. Explore cave systems, mine for minerals, and work together to survive!

Why similar: Class-Based 31.2%, Co-op 21.1%, PvE 14.8%, Shooter 10.3%, Sci-fi 8.6%

Why You'll Like It: Features the same core loop of squad-based co-op, class-specific roles, and intense PvE combat against swarms of alien creatures.

The Galaxy’s Last Line of Offence. Enlist in the Helldivers and join the fight for freedom across a hostile galaxy in a fast, frantic, and ferocious third-person shooter.

Why similar: Third-Person Shooter 31.6%, PvE 18.1%, Co-op 16.7%, Shooter 13.2%, Sci-fi 11.2%

Why You'll Like It: The direct evolution of the top-down formula into a cinematic third-person experience that maintains the intense squad-based cooperative action.

Aliens: Fireteam Elite is a cooperative third-person survival game set in the iconic Alien Universe. Battle through hordes of different types of Xenomorph, customize your character and gear, and level-up as you try to contain this ever-growing threat.

Why similar: Aliens 24.8%, Third-Person Shooter 22.5%, Co-op 18%, Shooter 11.9%, Sci-fi 9.3%

Why You'll Like It: Captures the specific 'bug hunt' aesthetic and claustrophobic co-op intensity of the Alien universe in a squad-based shooter.

Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!

Why similar: Co-op 45.1%, Moddable 37.8%, Sci-fi 17.2%

Why You'll Like It: A complex, squad-based survival game that requires intense cooperation and role-based management in a hostile, sci-fi environment.

Experience the explosive science fiction arcade-shooter that resurrects a much revered franchise in an epic single player and co-op multiplayer campaign.

Why similar: Aliens 23.2%, Shooter 12.4%, Twin Stick Shooter 12.4%, Co-op 12.1%, Top-Down 11.3%

Why You'll Like It: A classic top-down shooter that focuses on navigating dark, alien-infested corridors with a heavy emphasis on survival.

GTFO is a hardcore cooperative horror shooter that throws you from gripping suspense to explosive action in a heartbeat. Stealth, strategy, and teamwork are necessary to survive in your deadly, underground prison. Work together or die together.

Why similar: Co-op 33.2%, Shooter 21.8%, Tactical 21.4%, PvE 14.4%, First-Person 9.3%

Why You'll Like It: A hardcore cooperative experience that demands the same level of tactical coordination and resource management found in high-difficulty Alien Swarm missions.

Starship Troopers: Extermination is a 16-player co-op FPS that puts you on the far-off frontlines of an all-out battle against the Bugs! Squad up, grab your rifle, and do your part as an elite Deep Space Vanguard Trooper to take back planets from the Arachnid threat!

Why similar: Class-Based 24.5%, Aliens 19.8%, Co-op 12.9%, PvE 10.5%, Sci-fi 9.2%

Why You'll Like It: Perfectly captures the massive-scale bug-killing fantasy with a heavy emphasis on cooperative squad tactics.

Can you survive the alien onslaught? Gamers across the world will now have a chance to play the next chapter in this high-budget, high-quality series.

Why similar: Aliens 22.3%, Twin Stick Shooter 14.6%, Shooter 14.2%, Co-op 13%, Top-Down Shooter 11.6%

Why You'll Like It: Continues the top-down sci-fi shooter tradition with improved co-op mechanics and intense combat encounters.

Experience the final explosive chapter in the Alien Breed series and uncover the horrifying truth surrounding the existence of the Breed. Launch discount good thru Nov. 24 10am PST.

Why similar: Twin Stick Shooter 21.6%, Aliens 19.7%, Top-Down Shooter 15.4%, Co-op 10.3%, Shooter 9.8%

Why You'll Like It: The final chapter of the trilogy, offering consistent top-down action and alien-slaying gameplay.

RUNNING WITH RIFLES is a top-down tactical shooter with open world RPG elements. In RWR, you join the ranks of an army as a common soldier, just like the thousands around you.

Why similar: Moddable 27.1%, Top-Down Shooter 21.8%, Tactical 13.4%, Co-op 11.3%, PvE 9.6%

Why You'll Like It: Provides a large-scale top-down tactical experience where squad movement and positioning are key to survival.

The Ascent is a solo and co-op Action-shooter RPG set in a cyberpunk world. The mega corporation that owns you and everyone, The Ascent Group, has just collapsed. Can you survive without it?

Why similar: Top-Down Shooter 33.8%, Twin Stick Shooter 27.6%, Co-op 20.2%, Shooter 13.2%, PvE 5.2%

Why You'll Like It: Offers a polished top-down shooter experience with a rich sci-fi setting and satisfying combat mechanics similar to the seed game.

Face the varied challenges of the Machine God Zir in ARENA, a standalone expansion for Synthetik: Legion Rising! Leverage the next level in gun-play and experiment with powerful tech in varied action packed Arenas!

Why similar: Top-Down Shooter 47.6%, Co-op 33.9%, Shooter 11.4%, Top-Down 7.1%

Why You'll Like It: A fast-paced top-down shooter that features deep weapon mechanics and challenging combat scenarios.

Shadowgrounds breathes fresh air into the action genre with explosive combat sequences, an innovative weapon upgrade system, and an intriguing storyline. The adrenaline-pumping, top-down gameplay and audiovisual fireworks set the scene for this new action experience which also includes single computer (split keyboard or joystick) co-op...

Why similar: Aliens 21.3%, Top-Down Shooter 20.6%, Twin Stick Shooter 18.2%, Sci-fi 9.6%, Shooter 7.7%

Why You'll Like It: A top-down shooter that excels at creating an atmospheric, sci-fi horror experience while fighting off alien swarms.

Thunder Tier One is a realistic top-down shooter where you join an elite special operations team tasked with stopping a dangerous terrorist organization wreaking havoc across the fictional Eastern European country of Salobia.

Why similar: Moddable 20.7%, Top-Down Shooter 17.4%, Tactical 12.1%, Co-op 10.4%, PvP 8.6%

Why You'll Like It: A tactical top-down shooter that emphasizes realistic squad movement and coordinated mission execution.

Sven Co-op is a co-operative game originally based around Valve Software's Half-Life. In this game players must work together against computer controlled enemies and solve puzzles as a team.

Why similar: Moddable 27%, Co-op 20.4%, PvE 15.6%, Shooter 14%, Third Person 13.4%

Why You'll Like It: A classic cooperative mod-turned-standalone that emphasizes team-based objectives and survival in a shooter format.

Codename CURE is a first person, co-operative zombie game with support for up to five players, providing dynamic, fast-paced zombie fragging with both objective, and survival-based missions.

Why similar: Class-Based 25.9%, Moddable 25%, Co-op 12.5%, Shooter 11.9%, PvE 10.2%

Why You'll Like It: A cooperative zombie shooter that relies on objective-based gameplay and team coordination.

Rescue hostages, disarm bombs and save the day in this old school, side-scroller action game with retro graphics and retro sensibilities. Online and Couch Coop Included.

Why similar: Level Editor 40.1%, Tactical 22.3%, Co-op 21.1%, Shooter 16.5%

Why You'll Like It: While side-scrolling, it captures the tactical, room-clearing, and squad-coordination feel of the seed game perfectly.

Escape a chaotic alien planet by fighting through hordes of frenzied monsters – with your friends, or on your own. Combine loot in surprising ways and master each character until you become the havoc you feared upon your first crash landing.

Why similar: Third-Person Shooter 51.2%, Co-op 28.7%, Shooter 10.6%, Third Person 9.5%

Why You'll Like It: A cooperative roguelike shooter that emphasizes character builds and surviving overwhelming waves of enemies.

The chances of you surviving this all out war of society and the undead are slim to none. Already, there are millions of the walking dead shambling about, searching for food to eat. There's no known cure. One bite can possibly end it all for you. However, you aren't alone in this nightmare.

Why similar: Co-op 57.3%, Shooter 22.9%, First-Person 19.8%

Why You'll Like It: A realistic cooperative survival shooter that demands careful resource management and team communication.

Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification.

Why similar: Co-op 43%, Shooter 23.4%, First-Person 18.9%, PvP 14.7%

Why You'll Like It: A team-based survival shooter that focuses on cooperative tactics to survive against overwhelming odds.

Xeno Crisis is an arena shooter in which up to two players take control of battle-hardened marines embarking on a deadly mission to confront an alien menace! Run and gun your way through thousands of adversaries, searching for survivors, and ultimately facing the origin of the outpost's demise.

Why similar: Twin Stick Shooter 29.4%, Top-Down Shooter 20.8%, Aliens 20.1%, Shooter 8.1%, Co-op 7.9%

Why You'll Like It: A fast-paced, top-down arena shooter that focuses on tight controls and intense combat against alien swarms.

Space Hulk: Deathwing - Enhanced Edition is a First-Person Shooter based on Games Workshop’s cult classic board game set in Warhammer 40,000 universe. Expanding upon the original game, and featuring a host of new content, new features and a richer multiplayer mode.

Why similar: Co-op 40.8%, Shooter 23.4%, Aliens 12.3%, Sci-fi 11.8%, First-Person 11.7%

Why You'll Like It: Focuses on squad-based tactical combat in tight, claustrophobic sci-fi environments against alien threats.

The world has been thrown into chaos by an ancient evil from another dimension. As one of the last remnants of humanity, you must set out alone or alongside up to two other survivors to face down hordes of deadly enemies to try to carve a foothold, rebuild, and retake what was lost.

Why similar: Third-Person Shooter 45.4%, Co-op 38.5%, Shooter 16.1%

Why You'll Like It: A challenging co-op shooter that requires tactical team play and class synergy to overcome difficult boss encounters.

The classic Gauntlet 4-player co-op action gameplay returns in a completely new experience! Battle the endless hordes of foes as you and your friends fight for treasure and glory via both local and online co-op multiplayer. Invade the Darkness!

Why similar: Co-op 76.6%, Top-Down 23.4%

Why You'll Like It: A classic top-down co-op game that relies on distinct class roles and coordinated team play to survive waves of enemies.

Nation Red is an ultra fast infinite play arena-based shooter providing an exceptional close-quarter battlefield experience. Fight thousands of zombie mutants and their bosses in frantic bloody gameplay while earning close to 100 perks. Fight in Barricade, Survival or Free Play mode.

Why similar: Top-Down Shooter 41.1%, Twin Stick Shooter 36.5%, Co-op 14.3%, Top-Down 8.2%

Why You'll Like It: A pure horde-shooter experience that focuses on top-down combat and surviving against massive waves of enemies.

Purge the undead! Intense action-shooter with deep rpg elements, including upgradeable guns and armor, unique class skills, and class special abilities. Entire game can be played single player or as a 4-player online co-op game, including PvP events like Last Man Standing.

Why similar: Top-Down Shooter 42.6%, Co-op 22.1%, Shooter 14.3%, Top-Down 12.1%, Sci-fi 4.6%

CS2D is a free fast-paced top-down multiplayer shooter. Featuring many different game modes, a built-in map editor and much more.

Why similar: Top-Down Shooter 46.1%, Shooter 37%, Top-Down 11.6%, Co-op 5.3%

Isometric. Massively Multiplayer. Capture The Flag. Skirmish. Bug Hunt. And more. Welcome to FreeInfantry - the world's first massive multiplayer online isometric shooter.

Why similar: Twin Stick Shooter 24.6%, Top-Down Shooter 17.4%, Aliens 16.6%, Shooter 8.9%, Tactical 8%

Onraid is a challenging 2D shooter game, where you are free to develop your own play style and tactics to destroy your enemies.

Why similar: Co-op 51.7%, Shooter 48.3%

Thousands of aliens, giant spiders, mutant lizards, and more are on the attack - can you survive the onslaught? Crimsonland is a top-down shooter with a touch of RPG. Unlock over 30 weapons and over 50 perks from quirky to brutal. Complete the quest and show your skills in five survival modes.

Why similar: Twin Stick Shooter 31.6%, Top-Down Shooter 24.1%, Shooter 14.6%, Top-Down 13.8%, Co-op 11.4%

TE120 is a short single player experience set in the Half-Life Universe featuring a gravity defying weapon that allows you to jump buildings and sustain large falls. The story takes place at a mysterious date & location. Where are you? Why have you been sent?

Why similar: Shooter 45.4%, First-Person 26.4%, Sci-fi 16.8%, Co-op 11.4%

Teeworlds is a free online multiplayer game, available for all major operating systems. Battle with up to 16 players in a variety of game modes, including Team Deathmatch and Capture The Flag. You can even design your own maps!

Why similar: Level Editor 39.9%, Shooter 24.2%, Co-op 23.8%, PvP 12.1%

HELLFRONT is an intense top-down shooter. Conquer ground, build a base, and command your troops in battle! Play PvP or beat the campaign co-op or solo.

Why similar: Twin Stick Shooter 21.1%, Top-Down Shooter 19.6%, Aliens 16.6%, Co-op 10.9%, PvP 10.1%

Brain / Out is a multiplayer shooter with a nostalgic post-Soviet feel. Experience dynamic battles and exterminate your enemies with a large arsenal of modern weaponry. Lock'n'load!

Why similar: Shooter 73.6%, Co-op 26.4%

From Space is a solo and co-op action-shooter for squads up to four players. Take on the challenge of liberating the earth from an alien infestation with your friends, using over-the-top weaponry in a post-apocalyptic world with awesomely stylized graphics. The apocalypse has never been so much fun!

Why similar: Twin Stick Shooter 32.1%, Top-Down Shooter 22.6%, Co-op 16.2%, Top-Down 10.7%, Shooter 9.9%

Grab a weapon, demolish your enemies, level up, become more powerful, let the gore flow, let the limbs fly. BrainBread 2 introduces a zombie fps mixed with RPG / Arcade elements, the game is very action-packed and generally fast-paced.

Why similar: Co-op 49.6%, Shooter 30.7%, First-Person 19.7%

FRAG LIKE IT'S 1999! TOXIKK plays as if today's military shooters never existed: Designed as a spiritual successor to the FPS giants of the late 90s and early 2ks, TOXIKK carefully evolves their mechanics with modern technology and fresh ideas elaborated with Arena-FPS enthusiasts.

Why similar: Shooter 43%, First-Person 18.9%, Sci-fi 15.6%, Co-op 12.8%, PvP 9.7%

Welcome, trainee! Use tactics and special equipment to become a true cop in the free version of Police Stories: The Academy. Neutralize criminals, search for clues and find a "rat" in the police station alone or in co-op with a partner.

Why similar: Top-Down Shooter 24%, Level Editor 20%, Tactical 13.1%, Shooter 12%, Top-Down 10.9%

Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game

Why similar: Third-Person Shooter 38.6%, Third Person 18.3%, Co-op 13.4%, PvE 11.2%, Shooter 9.3%

A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!

Why similar: Aliens 29.2%, Moddable 21.5%, Sci-fi 15.3%, Co-op 10.8%, Tactical 10%

Deadswitch 3 is a fast-paced 2D multiplayer shooter. Experience action-packed combat with hundreds of weapons and multiple solo and team-based game modes.

Why similar: PvP 29.2%, Shooter 25.9%, Tactical 22.1%, Co-op 14.1%, Combat 8.6%

The critically acclaimed Vermintide 2 is a visually stunning and groundbreaking melee action game pushing the boundaries of the first person co-op genre. Join the fight now!

Why similar: Co-op 45.5%, PvE 25.7%, First-Person 15.7%, Combat 13.1%

Hack and slash? Check. Twin-stick-shooter? Check. 4 player coop to slay hordes of aliens & bosses with your friends? Check. Skills, upgrades, weapons, gears, talismans and more to make you stronger? Check. Wake up, bounty hunter. We have a mission for you. Time to clean up the scum of the galaxy.

Why similar: Twin Stick Shooter 33.3%, Top-Down Shooter 30.1%, Co-op 20.1%, Top-Down 9.2%, Sci-fi 7.3%

Cube Racer is a round based multiplayer racing game with cubes. Every round, all players race against each other to the finish line. Before every round, the players get to build one or more obstacles on the map. In the next round, all players have to pass all the obstacles, which have been built yet.

Survival horror MMO. As one of the few survivors of the outbreak, you must scratch a living out of the decaying ruins of society. Scavenge for supplies, improve your skills, and trade with other players. All the while, keeping your eyes peeled for the infected lurking around every corner.

Why similar: Third-Person Shooter 67.9%, PvE 32.1%

Black Squad is a free-to-play military first-person-shooter. Players can master their skills and show off their strategies with a wide range of game maps, modes, and weapons to choose from. Join thousands of FPS players worldwide in one of the most played games on Steam!

Why similar: Shooter 35.3%, Co-op 19%, PvP 17.8%, Tactical 15.5%, First-Person 12.4%

Step into the ultimate three-way war for honor, glory, and gold! This beloved community-driven game brings together swashbuckling Pirates, battle-hardened Vikings, and chivalrous Knights in hilarious and intense class-based combat. Join the fun, embrace the chaos, and fight your way to victory!

Why similar: PvP 41.3%, First-Person 34.4%, Shooter 24.3%

NS2: Combat is a powerful twitch-shooter where space marines battle aliens through a competitive mixture of MOBA & FPS playstyles. Are you ready?

Why similar: Shooter 32.1%, Aliens 25.2%, First-Person 21.6%, Sci-fi 21.1%

AirMech® Strike is a fast paced Action-RTS game that can be played solo, coop, or competitively online. Earn Kudos and Experience in battle and unlock a wide collection of AirMechs and Units while you practice the perfect strategy to emerge victorious!

Why similar: Co-op 32.5%, PvP 27.2%, Sci-fi 22.6%, Shooter 17.7%

Of Guards and Thieves is a multiplayer stealth game in which high-powered guards face off against fast and elusive thieves in a contest of wits. Outsmarting the enemy and shooting your way through to the goal are equally valid strategies. Simple rules, emergent gameplay and high replayability.

Why similar: Co-op 21.1%, Top-Down Shooter 20%, Shooter 15.9%, Level Editor 15.7%, Top-Down 14.1%

Shape Shifter: Formations is an action twin-stick shooter with rogue-lite elements, where you must destroy hordes of geometric enemies alone or with a friend. Select your ship and combine a large variety of weapons, abilities and infinitely stacking upgrades to craft your own unique build.

Why similar: Twin Stick Shooter 37.4%, Top-Down Shooter 23.5%, Co-op 17.4%, Top-Down 11.3%, Sci-fi 10.3%

In this 2-player twin-stick shooter, use a friendly drone for a game-changing abilities. Survive waves, upgrade, and uncover the mystery in this cooperative, action-packed experience.

Why similar: Twin Stick Shooter 30.3%, Top-Down Shooter 21.3%, Aliens 18.1%, Co-op 10.8%, Shooter 8.6%

Relic Hunters Zero: Remix is a remaster of the FREE 1 million player hit game about blasting evil space ducks and turtles with tiny cute guns. It’s fast, it’s tactical, and feels deliciously smooth to play. Unlock new weapons, characters and relics to defeat the Ducan Commander!

Why similar: Twin Stick Shooter 43.1%, Top-Down Shooter 28.7%, Co-op 19.6%, Shooter 8.7%

Cry of Fear is a psychological single-player and co-op horror game set in a deserted town filled with horrific creatures and nightmarish delusions. You play as a young man desperately searching for answers in the cold Scandinavian night, finding his way through the city as he slowly descends into madness.

Why similar: Co-op 62.3%, First-Person 19.2%, Shooter 18.5%