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 18.3%, Aliens 17.2%, Top-Down Shooter 12.1%, Class-Based 10.3%, Shooter 7.7%

Why You'll Like It: This is the definitive community-driven successor to the original game, featuring new campaigns and expanded mechanics.

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 30.9%, Online Co-Op 22.4%, Top-Down Shooter 16.2%, Multiplayer 8.6%, Sci-fi 5.7%

Why You'll Like It: This game is the spiritual successor to Alien Swarm, offering the same top-down, squad-based tactical combat against alien threats.

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 23.7%, Aliens 20.3%, Online Co-Op 12.7%, Shooter 9.9%, Third-Person Shooter 7%

Why You'll Like It: The premier modern co-op experience for fans of the Alien franchise, focusing on squad-based survival against xenomorphs.

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 20.9%, Shooter 13.5%, Sci-fi 10.3%, Top-Down 10%

Why You'll Like It: A classic top-down sci-fi shooter that shares the same claustrophobic atmosphere and alien-slaying gameplay.

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 40.3%, Top-Down Shooter 31.5%, Shooter 16.5%, Action 7.9%, PvE 2.8%

Why You'll Like It: A high-fidelity top-down sci-fi shooter that captures the gritty, industrial atmosphere of a futuristic alien-infested world.

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 21.8%, Shooter 14.9%, Action 12.7%, Top-Down Shooter 9.1%

Why You'll Like It: A direct sequel that improves upon the original's co-op mechanics and isometric action.

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 22.5%, Online Co-Op 15.5%, Top-Down Shooter 14.7%, Multiplayer 10.4%, Shooter 8.6%

Why You'll Like It: A top-down co-op shooter specifically designed for squad-based survival against waves of alien invaders.

Sequel to the best-seller ​The Red Solstice​. Plan your strategy and infiltrate a real-time tactical battlefield - alone or with up to 7 squad members. Can you demonstrate the combat prowess to survive and secure a future for humanity?

Why similar: Aliens 21.2%, Co-op 19.2%, Online Co-Op 12.8%, Multiplayer 11.7%, Team-Based 10%

Why You'll Like It: A deep, tactical top-down shooter that emphasizes squad coordination and sci-fi survival mechanics.

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 22%, Co-op 18.4%, Top-Down Shooter 12.9%, Shooter 11%, Sci-fi 8.3%

Why You'll Like It: The final chapter of the trilogy, offering polished top-down combat and intense sci-fi environments.

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 30.4%, Online Co-Op 24%, Co-op 19.4%, Shooter 8%, Action 7%

Why You'll Like It: An intense, tactical top-down shooter with deep class mechanics and high-stakes combat that mirrors the difficulty of Alien Swarm.

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 25.9%, Online Co-Op 17.8%, Team-Based 11.3%, Shooter 11.2%, Multiplayer 7.6%

Why You'll Like It: A classic Source-engine co-op experience that shares the same community-driven roots and tactical team focus.

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 27.3%, Top-Down Shooter 19.8%, Co-op 11.4%, Sci-fi 11%, Shooter 10%

Why You'll Like It: A top-down sci-fi shooter that focuses heavily on lighting, atmosphere, and fighting swarms of aliens.

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 27.6%, Multiplayer 21.7%, Online Co-Op 16.7%, Shooter 9.4%, Survival 9.4%

Why You'll Like It: A team-based survival horror game that utilizes the Source engine to create a classic, tactical multiplayer experience.

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%, Class-Based 16.8%, Shooter 12.9%, Sci-fi 9.6%, PvE 7.9%

Why You'll Like It: While first-person, it is the gold standard for squad-based, sci-fi co-op survival and objective completion.

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

Why similar: Aliens 20.3%, Multiplayer 18.8%, Team-Based 15%, Co-op 12%, Sci-fi 9.5%

Why You'll Like It: An asymmetric sci-fi shooter that requires intense team coordination and strategic planning to survive against alien forces.

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 24.2%, Top-Down Shooter 21.9%, Multiplayer 15.9%, Shooter 9.9%, Online Co-Op 8.7%

Why You'll Like It: A top-down co-op shooter that features RPG-like progression and intense wave-based combat.

Surviving is only half the game. The award-winning atmosphere and gameplay mechanics of the original Shadowgrounds make a triumphant return in this spin off/sequel armed with a slick new feature set! Shadowgrounds Survivor tells the story of the last remaining humans on Jupiter's moon Ganymede, where the alien onslaught is in full force.

Why similar: Aliens 21.7%, Top-Down Shooter 16.5%, Co-op 12.1%, Shooter 11.3%, Sci-fi 9.9%

Why You'll Like It: Expands on the original with more tactical depth and a focus on squad-based survival scenarios.

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 26.6%, Top-Down Shooter 24.6%, Multiplayer 24.2%, Action 8.7%, Top-Down 6.8%

Why You'll Like It: A top-down tactical shooter that captures the classic 2D multiplayer feel with a focus on objective-based combat.

6-player co-op survival horror at its finest! Free updates, free special events and a ridiculous amount of fun!

Why similar: Co-op 36.4%, Online Co-Op 15.7%, Multiplayer 11.9%, Survival 8.3%, Shooter 8.2%

Why You'll Like It: A wave-based co-op survival shooter that captures the same frantic intensity and class-based progression as Alien Swarm.

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 20.2%, Aliens 19.3%, Online Co-Op 15.1%, Class-Based 10.4%, Multiplayer 9.7%

Why You'll Like It: A large-scale co-op shooter that perfectly captures the feeling of fighting massive swarms of alien bugs.

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 28.3%, Aliens 21%, Online Co-Op 19.9%, Shooter 9.2%, Multiplayer 7.4%

Why You'll Like It: A co-op shooter focused on surviving alien invasions through squad-based tactics and objective management.

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 54.3%, Online Co-Op 15.3%, Multiplayer 14.2%, Top-Down 8.4%, Action 6.8%

Why You'll Like It: A classic top-down, class-based co-op game that relies heavily on team synergy and objective-based gameplay.

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 32.3%, Multiplayer 22.1%, Online Co-Op 20.1%, Survival 12.1%, Shooter 8.1%

Why You'll Like It: A hardcore co-op survival game with a gritty Source-engine feel that emphasizes teamwork over individual glory.

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 31.5%, Co-op 28.8%, Multiplayer 22.1%, Action 9%, Sci-fi 6.2%

Why You'll Like It: A co-op dungeon crawler with a focus on team-based combat and class-specific roles.

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 36.8%, Multiplayer 15.8%, Online Co-Op 14.9%, Shooter 9.7%, Team-Based 7.9%

Why You'll Like It: The gold standard for squad-based co-op survival against relentless hordes of enemies.

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 29.1%, Co-op 24.9%, Multiplayer 9.5%, Shooter 9.5%, Sci-fi 8.7%

Why You'll Like It: A squad-based shooter set in the iconic Alien universe that emphasizes team-based combat.

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

Why similar: Co-op 23.7%, Online Co-Op 17%, Third-Person Shooter 16.1%, Shooter 10.3%, Third Person 9.3%

Why You'll Like It: A fast-paced, class-based co-op sci-fi action game with deep customization and team-oriented missions.

Survive, hunt and prey in the deadly jungles and swamps in distinctly new and thrilling first person gameplay.

Why similar: Aliens 33%, Multiplayer 14.2%, Co-op 13.1%, Sci-fi 11.3%, Shooter 10.4%

Why You'll Like It: A classic sci-fi shooter that captures the tension and horror of the Alien franchise.

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 21.5%, Sci-fi 13.3%, Shooter 9.6%, Action 9.2%

Why You'll Like It: A top-down sci-fi action game that mirrors the perspective and pacing of the seed game.

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 18.8%, Online Co-Op 17.6%, Top-Down Shooter 14.7%, Multiplayer 9.4%, Shooter 9.3%

Why similar: Multiplayer 100%

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 32.6%, Co-op 24.8%, Shooter 15.8%, Action 11.4%, Online Co-Op 8.5%

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: Class-Based 23.9%, Multiplayer 21.1%, Shooter 18.8%, Team-Based 16.1%, Survival 9.9%

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 29.4%, Action 24.3%, Shooter 17.4%, Co-op 14.7%, Sci-fi 10.7%

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%, Online Co-Op 20%, Sci-fi 8.9%, Shooter 7.9%

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 22.1%, Multiplayer 18.2%, Team-Based 17.9%, Shooter 17.5%, Top-Down 14%

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%, Class-Based 18.9%, Shooter 12%, Sci-fi 10.8%, PvE 7.8%

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 21.1%, Aliens 20.1%, Top-Down Shooter 17.8%, Multiplayer 11.5%, 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 62.5%, Action 22.4%, Shooter 14.2%, Singleplayer 0.9%

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%, Co-op 14.6%, Class-Based 14.4%, Shooter 14.2%, Online Co-Op 12.9%

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

Why similar: Top-Down 59.1%, Action 37.1%, Singleplayer 3.8%

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 23.8%, Shooter 16.3%, Top-Down 11.7%, Sci-fi 10.2%

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

Why similar: Co-op 31.1%, Multiplayer 24.4%, Third-Person Shooter 24.1%, Action 16.4%, Strategy 3.9%

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 24.6%, Online Co-Op 16.1%, Shooter 14.7%, Class-Based 13.7%, Multiplayer 10.6%

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 41.3%, Shooter 27.3%, Action 21.9%, Survival 9.5%

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%

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 33.3%, Aliens 19.1%, Multiplayer 16%, Shooter 7.9%, Sci-fi 7.5%

From the team that brought you Aleph One, the classic sci-fi FPS Marathon from Bungie on Mac revived for modern hardware by the fan community.

Why similar: Aliens 23.6%, Shooter 20%, Co-op 16.2%, Sci-fi 11.4%, PvE 9.4%

Alien Arena is a furious frag fest with arenas ranging from the small, to the massive. With game modes such as Capture The Flag and Tactical, there are terrific team-based experiences to be had as well as 1v1 duels, free-for-all, and dozens of mutators to alter the game play to your liking.

Why similar: Shooter 48.9%, Action 29.8%, Multiplayer 21.3%

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

Why similar: Action 55.2%, Top-Down 44.8%

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 29.9%, Multiplayer 24.8%, Action 13.5%, Co-op 11.6%, Sci-fi 10%

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 22.1%, Online Co-Op 20.4%, Top-Down Shooter 14.7%, Multiplayer 9.9%, Action 8.8%

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 56.9%, Action 34.3%, Singleplayer 5.9%, Adventure 2.9%

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 21.4%, Online Co-Op 13.9%, Action 13%, Multiplayer 11.2%, Shooter 9.9%

Experience the critically acclaimed and award-winning Portal™ reimagined with full ray tracing and DLSS 4 in this free DLC for Portal owners. Start thinking with portals, with RTX on.

Why similar: Sci-fi 55%, Action 41.4%, Singleplayer 3.6%

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: Co-op 33.3%, Top-Down Shooter 21.9%, Multiplayer 15.7%, Online Co-Op 10.7%, Action 7.7%

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 20.1%, Multiplayer 18.3%, Class-Based 15.6%, Shooter 13.6%, Co-op 13.6%

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 25.9%, Shooter 18.3%, Action 18.1%, Aliens 14.2%, Team-Based 12.9%