Games Like Alien Swarm

Co-operative top-down shooter game available for free. An epic bug hunt featuring a unique blend of co-op play and squad-level tactics.

Why similar: Co-op 18.4%, Aliens 17.1%, Top-Down Shooter 12%, Class-Based 10.5%, Shooter 7.6%

Why You'll Like It: This is the definitive community-driven expansion that continues the legacy of the original with more content and improved mechanics.

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 25.1%, Co-op 21.2%, Shooter 13.3%, Sci-fi 10.3%, Top-Down 10.2%

Why You'll Like It: Provides a classic isometric alien-slaying experience with a heavy emphasis on corridor-based combat.

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: Co-op 22.6%, Online Co-Op 15.8%, Top-Down Shooter 14.5%, Multiplayer 10.4%, Team-Based 8.5%

Why You'll Like It: A modern top-down co-op shooter that mirrors the squad-based alien-slaying gameplay of the seed game.

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 23.2%, Co-op 22.1%, Shooter 14.7%, Action 12.5%, Top-Down Shooter 9%

Why You'll Like It: A direct sequel that refines the top-down shooter mechanics and adds more intense co-op scenarios.

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: Co-op 31%, Online Co-Op 22.7%, Top-Down Shooter 16%, Multiplayer 8.5%, Sci-fi 5.7%

Why You'll Like It: It is the gold standard for top-down, squad-based tactical shooters that require intense team coordination against alien threats.

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: Co-op 42.1%, Class-Based 17.2%, Shooter 12.6%, Sci-fi 9.5%, PvE 8%

Why You'll Like It: Offers exceptional squad-based sci-fi co-op where class roles and teamwork are essential for survival.

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: Aliens 21.9%, Co-op 18.6%, Top-Down Shooter 12.7%, Shooter 10.8%, Sci-fi 8.3%

Why You'll Like It: Completes the trilogy with high-stakes, claustrophobic combat against alien swarms.

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 54.4%, Online Co-Op 15.2%, Multiplayer 14.2%, Top-Down 8.5%, Action 6.7%

Why You'll Like It: Focuses heavily on class-based co-op synergy and top-down action that feels very similar to the squad dynamics of Alien Swarm.

Set in the zombie apocalypse, Left 4 Dead 2 is a co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.

Why similar: Co-op 38.1%, Online Co-Op 16.1%, Multiplayer 15.2%, Shooter 10.3%, Team-Based 5.6%

Why You'll Like It: While first-person, it remains the pinnacle of class-based, wave-based co-op survival against overwhelming odds.

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: Co-op 26%, Online Co-Op 18.1%, Team-Based 11.4%, Shooter 10.9%, Multiplayer 7.6%

Why You'll Like It: A classic co-op shooter experience that shares the Source engine DNA and community-driven spirit of the seed game.

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 27.1%, Multiplayer 21.4%, Online Co-Op 16.7%, Survival 10.9%, Shooter 9%

Why You'll Like It: A Source-based co-op survival game that captures the tactical, mod-scene feel of the original Alien Swarm.

Take back the city of Tertium from hordes of bloodthirsty foes in this intense and brutal action shooter. Warhammer 40,000: Darktide is the new co-op focused experience from the award-winning team behind the Vermintide series. As Tertium falls, Rejects Will Rise.

Why similar: Co-op 42.4%, Class-Based 24.3%, Shooter 16.6%, PvE 9.6%, Action 7.2%

Why You'll Like It: Delivers a gritty, intense squad-based horde shooter experience in a dark sci-fi universe.

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: Co-op 24.5%, Top-Down Shooter 21.7%, Multiplayer 16%, Shooter 9.8%, Online Co-Op 8.7%

Why You'll Like It: A top-down, class-based shooter that emphasizes co-op progression and gear management.

In KILLING FLOOR 2, players descend into continental Europe after it has been overrun by horrific, murderous clones called Zeds that were created by rogue elements of the Horzine Corporation. 6-player Co-Op & 12-player VS Zed-slaughtering mayhem.

Why similar: Co-op 24.2%, Online Co-Op 17.7%, Multiplayer 12%, Team-Based 11.2%, Shooter 10.6%

Why You'll Like It: Focuses on wave-based survival and class-based progression that will feel familiar to fans of the seed game's combat loop.

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: Co-op 23.8%, Aliens 20.2%, Online Co-Op 13%, Shooter 9.7%, Third-Person Shooter 6.9%

Why You'll Like It: Focuses specifically on the thrill of fighting waves of xenomorphs in a dedicated squad-based co-op setting.

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

Why similar: Aliens 20.2%, Multiplayer 18.9%, Team-Based 15.1%, Co-op 12.1%, Sci-fi 9.5%

Why You'll Like It: Blends intense sci-fi FPS combat with team-based strategy in a way that rewards coordinated play.

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: Co-op 23.4%, Top-Down Shooter 22.8%, Shooter 18.1%, Top-Down 14.3%, Action 10.3%

Why You'll Like It: The quintessential top-down horde shooter that focuses on pure arcade action and survival.

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: Shooter 26.3%, Top-Down Shooter 24.6%, Multiplayer 24.5%, Action 8.5%, Top-Down 6.9%

Why You'll Like It: A 2D top-down adaptation of a tactical shooter that captures the essence of squad-based combat in a simplified view.

SYNTHETIK is an unforgiving tactical shooter rogue-lite where freedom and experimentation is key. Fight in a world overrun by the Machine Legion and their Gods. Experience the next level in gun-play and dive into unparalleled build options and Android upgrades. Can you defeat the Heart of Armageddon?

Why similar: Top-Down Shooter 30.1%, Online Co-Op 24.5%, Co-op 19.6%, Shooter 7.9%, Action 6.8%

Why You'll Like It: A high-intensity top-down shooter with deep tactical mechanics and rewarding combat feedback.

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: Co-op 40.6%, Top-Down Shooter 31.2%, Shooter 16.3%, Action 7.9%, PvE 2.9%

Why You'll Like It: A visually stunning top-down shooter that captures a similar sci-fi atmosphere and frantic combat pace.

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: Co-op 24.5%, Online Co-Op 16.4%, Shooter 14.3%, Class-Based 14%, Multiplayer 10.6%

Why You'll Like It: A free-to-play, Source-based co-op zombie shooter that mirrors the accessible, team-focused design of the seed game.

NOW AVAILABLE! When the Earth falls to an extra-terrestrial invasion, humanity becomes an endangered species. Earthfall is a four-player cooperative shooter that challenges players to survive hordes of ruthless alien drones and their inscrutable masters.

Why similar: Co-op 28.5%, Aliens 20.9%, Online Co-Op 20.2%, Shooter 9.1%, Multiplayer 7.4%

Why You'll Like It: A co-op shooter that emphasizes team survival and defensive tactics against alien threats.

RUINER is a brutal action shooter set in the year 2091 in the cyber metropolis Rengkok. A wired psychopath lashes out against a corrupt system to uncover the truth and retrieve his kidnapped brother under the guidance of a secretive hacker friend.

Why similar: Top-Down Shooter 41.9%, Action 16.4%, Sci-fi 14%, Shooter 12.7%, Top-Down 10.2%

Why You'll Like It: Features fast-paced, brutal top-down combat with a strong sci-fi aesthetic and high difficulty.

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: Co-op 33.6%, Multiplayer 18%, Third-Person Shooter 13.8%, Online Co-Op 13.6%, Shooter 7.6%

Why You'll Like It: A co-op roguelike shooter that emphasizes team synergy and sci-fi themes in a chaotic combat environment.

Nine distinct classes provide a broad range of tactical abilities and personalities. Constantly updated with new game modes, maps, equipment and, most importantly, hats!

Why similar: Multiplayer 27.1%, Co-op 14.7%, Class-Based 14.6%, Shooter 13.9%, Online Co-Op 13.1%

Why You'll Like It: The definitive class-based multiplayer shooter from the same developer, sharing similar design philosophies.

Introducing Aperture Desk Job — a free playable short made for the Steam Deck, set in the universe of the modestly popular Portal games.

Why similar: Shooter 57.1%, Action 34.1%, Singleplayer 6.1%, Adventure 2.8%

Why You'll Like It: A short, free-to-play experience from the same universe as the seed game that offers a lighthearted take on action mechanics.

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 25.7%, Online Co-Op 23.8%, Co-op 19.4%, Action 10.6%, Multiplayer 7.5%

Why You'll Like It: Provides pure, arcade-style top-down shooting focused on surviving endless waves of enemies.

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: Multiplayer 32.8%, Co-op 25%, Shooter 15.5%, Action 11.2%, Online Co-Op 8.7%

Why You'll Like It: A fast-paced, free-to-play 2D multiplayer action game that emphasizes movement and team coordination.

Join the ranks of the Spiral Knights. Stranded on an alien world, you must explore the ever-changing Clockworks beneath its surface.

Why similar: Online Co-Op 31.9%, Co-op 28.6%, Multiplayer 22.1%, Action 8.8%, Sci-fi 6.1%

From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters.

Why similar: Co-op 37%, Multiplayer 15.8%, Online Co-Op 15.2%, Shooter 9.5%, Team-Based 8%

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: Co-op 20.3%, Aliens 19%, Online Co-Op 15.3%, Class-Based 10.6%, Multiplayer 9.7%

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: Multiplayer 27.2%, Co-op 23.1%, Online Co-Op 20.3%, Sci-fi 8.9%, Shooter 7.7%

Dystopia is a cyberpunk game with tense combat situations in a high-tech world spanned by computer networks. Playing as either Punk mercenaries, or Corporate security forces, the player will fight through the physical world to gain access, via jack-in terminals, to cyberspace.

Why similar: Multiplayer 33%, Co-op 19.9%, Shooter 15.6%, Sci-fi 15.2%, Action 12.4%

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: Co-op 18.9%, Online Co-Op 17.9%, Top-Down Shooter 14.5%, Multiplayer 9.4%, Shooter 9%

Team up or face it alone in this top down zombie slaying defense adventure! Featuring up to 4 player online co-op, cleanse the infected wave by wave and upgrade your base with traps & defenses to build the Ultimate Zombie Defense. Can YOU stop them?

Why similar: Co-op 22%, Online Co-Op 20.6%, Top-Down Shooter 14.7%, Multiplayer 9.8%, Action 8.7%

Unique strategy/first person shooter mix: One commander on each team plays from above, choosing research, placing buildings and giving orders. The rest fill the role of soldiers on the ground, with four distinct classes to choose from and customizable vehicles to drive.

Why similar: Class-Based 22.5%, Multiplayer 18.2%, Team-Based 17.9%, Shooter 17.1%, Top-Down 14.2%

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: Co-op 21.4%, Aliens 20%, Top-Down Shooter 17.6%, Multiplayer 11.6%, Sci-fi 9.7%

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: Multiplayer 63.1%, Action 22%, Shooter 14%, Singleplayer 0.9%

Halo: Spartan Strike makes you a Spartan supersoldier battling evil forces. Delve into 30 challenging missions through cities and jungles using a devastating arsenal of weapons, abilities and vehicles including the iconic Warthog against the Covenant and Promethean enemies. *DirectX feature level 10 required*

Why similar: Top-Down Shooter 24.9%, Aliens 21.6%, Sci-fi 13.3%, Shooter 9.5%, Action 9.1%

Stormgate is a free-to-play real-time strategy game with a full single-player campaign, 3-player co-op, and PvP versus modes on over 60 maps. Our Editor is also freely available for you to craft just about any custom game mode you can imagine. Join our development journey today!

Why similar: Co-op 28.5%, Multiplayer 24.2%, Moddable 16.4% ★, Top-Down 14.4%, PvE 6.6%

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: Aliens 30.4%, Top-Down Shooter 23.7%, Shooter 16.2%, Top-Down 11.9%, Sci-fi 10.3%

Monday Night Combat is a class-based, third-person shooter… and the most popular lethal sport of the future!

Why similar: Co-op 31.4%, Multiplayer 24.7%, Third-Person Shooter 23.8%, Action 16.1%, Strategy 3.9%

Seven years after the Inventory closed its doors, this underground social club has reopened for business. Play No Limit Texas Hold’em with four video game icons in a high-stakes battle of cards, bets, and trash talk.

Why similar: Singleplayer 100%

Fast multiplayer action set in the Half-Life 2 universe! HL2's physics adds a new dimension to deathmatch play. Play straight deathmatch or try Combine vs. Resistance teamplay. Toss a toilet at your friend today!

Why similar: Multiplayer 29.6%, Action 24%, Shooter 17.2%, Co-op 14.9%, Sci-fi 10.7%

Awaria is a short game about working in haunted maintenance tunnels.

Why similar: Top-Down 60%, Action 36.1%, Singleplayer 3.8%

You & your friends are the deadliest killers in the galaxy – the US Colonial Marines. It’s up to you to not just survive, but wipe out the Xeno infestation.

Why similar: Aliens 29%, Co-op 25.2%, Multiplayer 9.5%, Shooter 9.3%, Sci-fi 8.7%

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: Multiplayer 26.2%, Shooter 18%, Action 17.9%, Aliens 14.2%, Team-Based 13%

A truly free and open source multiplayer shooter, no strings attached. Have casual deathmatch matches on various scenarios. Build your own levels with the ingame editor and assets that come with the game, or just play around and use it as a sandbox.

Why similar: Multiplayer 41.9%, Shooter 27.1%, Action 21.6%, Survival 9.4%

One of the most popular online action games of all time, Team Fortress Classic features over nine character classes -- from Medic to Spy to Demolition Man -- enlisted in a unique style of online team warfare. Each character class possesses unique weapons, items, and abilities, as teams compete online in a variety of game play modes.

Why similar: Action 19.7%, Multiplayer 18.4%, Class-Based 15.9%, Co-op 13.6%, Shooter 13.4%

S&box is a game creation platform built on the Source 2 engine. Play, create, and share games, explore community creations, and experience endless sandbox fun with powerful modern tools.

Why similar: Shooter 38%, Third-Person Shooter 28.6%, Action 18.2%, Third Person 15.1%

Snow Plows vs Aliens: 4 player, local co-op chaos

Why similar: Action 54.4%, Top-Down 45.6%

Stranded on an alien planet, you must defend your Powercore! Use your weapons to fight hordes of alien enemies and strategically use traps in this new FPS tower-defense survival game!

Why similar: Co-op 33.6%, Aliens 19%, Multiplayer 16.1%, Shooter 7.8%, Sci-fi 7.5%

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 29.6%, Multiplayer 25.2%, Action 13.3%, Co-op 11.9%, Sci-fi 9.9%

Counter-Strike Nexon is a Free to Play MMOFPS offering competitive PvP and PvE action including content from the original Counter-Strike and all new game modes, map creation function, weapons, and hordes of Zombies!

Why similar: Co-op 35.7%, Multiplayer 17.5%, Shooter 15.8%, Online Co-Op 15.5%, PvE 8.3%

Purchase FBC: Firebreak and invite your friends to play the full game for free on any platform. FBC: Firebreak is a three-player cooperative first-person shooter set within a mysterious federal agency under assault by otherworldly forces.

Why similar: Co-op 38.1%, Class-Based 19.2%, Shooter 11.6%, Sci-fi 10.7%, PvE 7.9%

Embark on an epic sci-fi, free-to-play adventure. Spacelords is a brand-new take on the shooter genre. Through its 4 vs 1 campaign, you experience both sides of the story: Join the Raiders in their fight to free the legendary Broken Planet, or switch sides and fight as the Antagonist alongside the invading hordes!

Why similar: Co-op 21.6%, Online Co-Op 14.1%, Action 12.7%, Multiplayer 11.3%, Shooter 9.7%

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: Co-op 27.5%, Top-Down Shooter 18.9%, Online Co-Op 18.1%, Action 15.3%, Multiplayer 8.1%