Games like Alien Swarm on Steam
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GrandChase
Grand Chase is a free side-scrolling online action RPG with anime inspired graphics. Enjoy exciting adventures in dungeons and PvP with unique characters.
LARA CROFT AND THE TEMPLE OF OSIRIS™
Lara Croft and the Temple of Osiris is the sequel to the critically-acclaimed Lara Croft and the Guardian of Light, and the first-ever four-player co-op experience with Lara Croft.
Cartoon Strike
"Different realities, different rules, but always fun". In the multiplayer game Cartoon Strike, each map offers a different gaming experience. Players can enjoy a few minutes of fighting in the WWII, followed by a few minutes in the present, future or even funny mode.
Enemy On Board
Online (6v2) social deduction game that will ruin your friendships. 6 crew members, 2 murderous shape-shifting aliens. Trust No One.
School Labyrinth
School labyrinth is a 1~4 co-op horror game set in a randomly generated school at night. Cooperate with your friends and try to escape from the school building!
Far Cry® New Dawn
Dive into a transformed vibrant post-apocalyptic Hope County, Montana, 17 years after a global nuclear catastrophe. Lead the fight against the Highwaymen, as they seek to take over the last remaining resources.
Resident Evil 5
This game is a port of the Games for Windows - Live version that was released in 2009. If you buy the Untold Stories Bundle here on Steam, it will be the same as upgrading to Resident Evil 5 Gold Edition.
Lunch Lady
Lunch Lady is a 1-4 player online co-op survival horror game. The school final exams are coming up and the best idea you and your friends had was to steal the test answers. Find all 10 pages and don't get caught by the murderous Lunch Lady!
Brawlhalla
An epic platform fighter for up to 8 players online or local. Try casual free-for-alls, ranked matches, or invite friends to a private room. And it's free! Play cross-platform with millions of players on PlayStation, Xbox, Nintendo Switch, iOS, Android & Steam! Frequent updates. Over sixty Legends.
Gunscape
Gunscape provides easy-to-use tools based on a block-placement interface everybody's already familiar with to create all types of maps. Don't like building stuff? Then just blast your way through hordes of monsters or duel with other players!
BEACHED
A free-to-play, low-poly, open-world survival shooter where you’ll battle other players, explore massive monuments, and fight to stay alive. Build and fortify your base to defend against enemy raids, gather resources, and conquer a harsh, competitive world. Survival means doing whatever it takes.
Spiral Knights
Join the ranks of the Spiral Knights. Stranded on an alien world, you must explore the ever-changing Clockworks beneath its surface.
Predecessor
Inspired by the legacy of Paragon, built with love by the community, and powered by Unreal Engine 5, Predecessor is the ultimate fusion of shooter action and MOBA strategy. Join more than 2,000,000 players and play for FREE now!
Transmissions: Element 120
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?
Hellbound: Survival Mode
FULL GAME NOW AVAILABLE. GO GET IT! This is the Free Survival Mode for Hellbound: a '90s style First Person Shooter, made 30 years later… but just a glimpse of the full game, go check it out!
Hide and Shriek
Scare or be scared in this FREE adrenaline-pumping multiplayer game full of hijinks and mischief! Set traps, cast spells, and scare the living hell out of your opponent to win!
The Blackout Club
The Blackout Club is a first-person co-op horror game centered around a group of teenage friends investigating a monstrous secret beneath the skin of their small town. 1-4 players explore procedurally-generated missions against a fearsome enemy you can only see with your eyes closed.
Space Farmers
Grab a friend, grab a gadget, grab a gun and get ready for the most fun you'll ever have in a co-op game!
Risk of Rain 2
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.
Far Cry® 6
Enter the adrenaline-filled world of a modern-day guerrilla revolution. With stunning vistas, visceral gunplay, and a huge variety of gameplay experiences, there's never been a better time to join the fight.
Zombie Builder Defense
Top down, action packed, multiplayer, zombie shooter. Build your base with friends and see how long you can survive the endless horde of zombies. Level up with friends, or alone, how you die is up to you.