Online co-op Shoot 'Em Up games

Every online co-op Shoot 'Em Up game on Steam we know of, newest first. Add tags or a price band to narrow it down.

Showing 11–20 of 144 games matching Shoot 'Em Up · updated 12 Oct 2026

Filters: Shoot 'Em Up × Clear all
$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
0% of 1

A 2D space survival sandbox set 200 years after a rogue AI shattered the solar system. Play as an astronaut or the rogue AI itself, fight AIs, humans, and alien life, and survive the void: mine resources, build factories, and keep your ships and stations, and crew alive.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated

A neon-drenched FPS arena shooter where momentum is everything. Bunny hop, air strafe, wall jump, grapple, and dash through waves of glowing enemies in an ever-changing arena. Chain kills, climb the multiplier, survive. Inspired by Geometry Wars and Quake movement.

$
Released
Price
$ · Cheap
Players
👥 Up to 4 players

Team up with up to 4 players in this fast-paced online co-op top-down shooter where humanity’s last hope stands against endless hordes of radioactive mutant frogs.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 1–8 players
Reviews
83% of 6

Use the bathroom or defend your home from zombies? The choice is yours! Be Human... Or Die trying is a 1-8 player co-op defense game where killing zombies is just as important as taking a shower. Also did I mention that you play an alien in a mech suit? Yeah it's a weird game like that.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 4

Space Show is an explosive space shoot’em up blending fast-paced arcade action with roguelite progression. Destroy waves of asteroids, battle enemy fleets, and defend Earth in an endless war where only survival… and glory matter!

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Not stated
Reviews
0% of 4

Free-to-play space MMO. Pilot a starship across an infinite procedural galaxy — explore 15 civilizations, claim sectors, fight in fleets, trade on the player marketplace.

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
58% of 12

A dark wave-based zombie defense game where you build your defenses, fight relentless undead hordes, and survive against the infected… and hostile raiders?

If you loved these, you'll love this