# Best Co-op Tower Defense Games to Play With Friends

The best co-op tower defense games on Steam, from Bloons TD 6 to action hybrids where you fight alongside your towers.

[PLAYNEXT](https://playnext.party/) · Published: 10/7/2026

![Bloons TD 6 screenshot 2](https://playnext.party/steam-images/242f07f3-f967-4db6-ae95-915cee3c6b1b/ss-c8525f327db944b0c0b9cedeeeca15c5c55797a2?width=1200)

Tower defense is easy to understand and great to plan together: who builds where, who covers which lane. These co-op tower defense games on Steam include pure strategy and action hybrids where you fight on the front line yourself.

## [1. Bloons TD 6](https://playnext.party/en/games/bloons-td-6/)

[![Bloons TD 6 screenshot 1](https://playnext.party/steam-images/242f07f3-f967-4db6-ae95-915cee3c6b1b/ss-a20e85177d96408281e0672927f8e9137c1f423a?width=1200)](https://playnext.party/en/games/bloons-td-6/)

A large 3D tower defense game about popping waves of Bloons. In co-op, friends share the map and defend together, combining their towers and upgrades into one strategy.

*Play together: Online co-op*

## [2. Dungeon Defenders](https://playnext.party/en/games/dungeon-defenders/)

[![Dungeon Defenders screenshot 1](https://playnext.party/steam-images/37ad3441-6b76-41e4-9aa5-8d38261464a6/ss-b1d65cd78ad075bbe2c4ba47a28a6a225018b09c?width=1200)](https://playnext.party/en/games/dungeon-defenders/)

A four-player co-op tower defense action RPG: create a hero from one of four classes and save Etheria. Each class builds different defenses, so a team has to coordinate where everything goes.

*Play together: Online co-op, Remote Play Together*

## [3. Orcs Must Die! 2](https://playnext.party/en/games/orcs-must-die-2/)

[![Orcs Must Die! 2 screenshot 1](https://playnext.party/steam-images/910ece9c-c734-42ce-824a-bc166c6ab650/ss-7d6853d1ced1c1bfc1ff74fe9911b5f099ab4f37?width=1200)](https://playnext.party/en/games/orcs-must-die-2/)

Grab a friend and slay orcs in huge numbers with traps and weapons. The sequel to an award-winning strategy game, built around co-op chaos and clever trap combinations.

*Play together: Online co-op*

## [4. Sanctum 2](https://playnext.party/en/games/sanctum-2/)

[![Sanctum 2 screenshot 1](https://playnext.party/steam-images/ed7b8e03-4b5e-41ee-9684-1e976d2d2fcd/ss-383e61d27a880f8c121a70a587ffa49a949e1df2?width=1200)](https://playnext.party/en/games/sanctum-2/)

A tower defense and FPS hybrid: pick one of four classes and protect the oxygen-producing Cores from hordes of aliens. You build mazes of towers, then fight alongside them.

*Play together: Online co-op*

## [5. The Riftbreaker](https://playnext.party/en/games/the-riftbreaker/)

[![The Riftbreaker screenshot 1](https://playnext.party/steam-images/42d7fbeb-d444-4f21-9815-c427a12f064f/ss-38f891f3f322b121f4e132cdb692ab31bac47b2b?width=1200)](https://playnext.party/en/games/the-riftbreaker/)

A base-building and survival game with action RPG elements for up to four players. Build your base, craft weapons and research new technology while fighting off countless enemies.

*Play together: Online co-op*

## [6. Legion TD 2 - Multiplayer Tower Defense](https://playnext.party/en/games/legion-td-2-multiplayer-tower-defense/)

[![Legion TD 2 - Multiplayer Tower Defense screenshot 1](https://playnext.party/steam-images/585f8a84-27b3-4210-bd5b-24dcc04f2890/ss-e279d036f93bdab230950f04b1144c2d6871621b?width=1200)](https://playnext.party/en/games/legion-td-2-multiplayer-tower-defense/)

A multiplayer tower defense of tactics, teamwork and prediction. Defend against waves and destroy the enemy king before they destroy yours, in parties of one to eight players.

*Play together: Online co-op, Online PvP*

## Find more games like these

Browse the [full list](https://playnext.party/en/games/tag/tower-defense/) on PLAYNEXT, with filters for genre, tags and ways to play together.




Choose your next game with friends.

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## Related resources

- [Best Strategy Games to Play With Friends on Steam](https://playnext.party/en/resources/best-strategy-games-to-play-with-friends/): The best multiplayer strategy games on Steam, from Age of Empires II and Civilization VI to factory building and co-op tower defense.
- [Best Cozy Co-op Games to Play With Friends](https://playnext.party/en/resources/best-cozy-co-op-games/): The best cozy co-op games on Steam: farming, building, renovating and relaxed strategy to enjoy with friends at your own pace.
- [Best Co-op Roguelikes to Play With Friends on Steam](https://playnext.party/en/resources/best-co-op-roguelikes/): The best co-op roguelikes and roguelites on Steam: short runs, random loot and new builds every time you play with friends.

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Source: https://playnext.party/en/resources/best-co-op-tower-defense-games/

Language: en