Online co-op Tower Defense games

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

Showing 21–30 of 152 games matching Tower Defense · updated 12 Oct 2026

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$
Released
Price
$ · Cheap
Players
👥 Up to 6 players
Reviews
0% of 2

A real-time fantasy tower defense where adjacency matters. Master 12 magic schools, blend them through 66 unique synergies, and defend across 21 distinct maps. 144 tower variants, deep upgrade trees, endless wave escalation. Play solo or in online co-op.

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
89% of 68

Starvault VR is the first true VR MOBA shooter, blending classic MOBA strategy with explosive hero-shooter action. Squad up, master unique heroes, unlock insane skins, and jump into intense 5v5 battles. Step into the arena!

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$$
Released
Price
$$ · Standard
Players
👥 2–4 players
Reviews
77% of 1,223

Fight hordes and defend your Stronghold in a bullet heaven survivor-like with co-op and tower defense. Gain power-ups every level, collect random artifacts from chests and grow stronger to survive, defeat the boss and claim a top spot on the Sineus Arena leaderboards!

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 3

Battle through hordes of foes in this roguelike blend of survivors, bullet hell, and tower defense. Conquering TD Run will require more than simple survivor-esque DPS checks. Determine optimal character and weapon specific builds and employ real-time tactics to stay ahead of the increasing enemies.

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$
Released
Price
$ · Cheap
Players
👥 1–4 players
Reviews
90% of 10

The power core is failing. You are humanity's last line of defense. Hold the line in this brutal 4-player co-op zombie survival FPS. Reinforce barricades, upgrade your arsenal, and fight through increasingly deadly waves of zombies alone or with friends. How long can you hold the line?

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
79% of 249

Fend off brutal waves of demonic hordes in this epic fantasy tower defense survivors like! Hack and slash among the action or zoom to strategically control the battlefield. You are the city’s last line of defense, build your base, defend the gate!

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$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
69% of 694

Build your base on a moving Machine, travel through biomes with different resources, and prepare for the night when a zombie threat is much higher than during the day. Would you go solo or explore this new world with your best friends?

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Not stated
Reviews
73% of 68

"Collapsing World" is an innovative tower defense game blending deck-building and roguelike mechanics. Recruit unique companions, craft powerful skill decks, and tackle randomized stages. Deep strategy breaks the traditional TD mold—every run is a fresh challenge!