Co-op games like Ultimate Zombie Defense 2
Below are 10 cooperative Steam games similar to Ultimate Zombie Defense 2, ranked by player overlap and content similarity. Every pick supports cooperative play — online co-op, LAN co-op, or shared/split-screen — so you can play with friends right out of the box. imho.run pulls from the same Steam category data Valve uses internally, so "Co-op" here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Ultimate Zombie Defense 2 page.
Ranked picks
- 1
After the Fall®
Co-op alternative to Ultimate Zombie Defense 2 — playable with friends. Shares Action and Adventure with Ultimate Zombie Defense 2.
From the team that brought you Arizona Sunshine® comes an epic VR action FPS with intense co-op gameplay at its core. Team up with friends and take on a hostile VR world filled with ferocious undead--mutated and twisted by the relentless cold.
- 2
Variant 22
Online Co-op alternative to Ultimate Zombie Defense 2 — playable with friends. Shares Action and Indie with Ultimate Zombie Defense 2.
Variant 22 is a survival game set in a procedural roguelike post American wasteland. Singleplayer or Multiplayer Coop, Scavenge loot from contaminated areas then base build back in the "safe zone" against endless hordes of the infected.
- 3
World War Z
Co-op alternative to Ultimate Zombie Defense 2 — playable with friends. Shares Action with Ultimate Zombie Defense 2.
World War Z is a heart-pounding coop third-person shooter for up to 4 players featuring massive swarms of hundreds of zombies, focused on fast-paced, gruesomely spectacular action.
- 4
DEADFALL
Co-op alternative to Ultimate Zombie Defense 2 — playable with friends. Shares Action with Ultimate Zombie Defense 2.
Fight alone or with friends in a brutal horror wave-survival experience. Survive against endless waves of terrifying infected in this high-difficulty horror shooter. Play solo or with friends, unlock devastating weapons, discover secrets, and see how long you can endure the nightmare.
- 5
Deadswitch 3
Co-op alternative to Ultimate Zombie Defense 2 — playable with friends. Shares Action and Strategy with Ultimate Zombie Defense 2.
Deadswitch 3 is a fast-paced 2D multiplayer shooter. Experience action-packed combat with hundreds of weapons and multiple solo and team-based game modes.
- 6
Stay Home
Online Co-op alternative to Ultimate Zombie Defense 2 — playable with friends. Shares Action and Indie with Ultimate Zombie Defense 2.
Stay Home is a breathtaking first-person shooter with co-op for up to four players. Get ready for fast-paced gameplay and terrifying action as hordes of zombies flock to you. You can run but you can't hide!
- 7
Cops N' Zombies
Co-op alternative to Ultimate Zombie Defense 2 — playable with friends. Shares Action and Strategy with Ultimate Zombie Defense 2.
A horror social deduction game where you and your friends take on the roles of police officers on a critical mission. But there is a zombie among you that can transform at will. Can you trust your friends?
- 8
Kill Me If You Can: Multiplayer Edition
Online Co-op alternative to Ultimate Zombie Defense 2 — playable with friends. Shares Action and Strategy with Ultimate Zombie Defense 2.
Kill Me If You Can: Multiplayer Edition is an RPG and construction-based zombie survival defense game. Explore by day to gather resources and grow, then build defenses at night to hold back zombie hordes. Each character has unique skills, and you can control multiple characters during gameplay.
- 9
SAS: Zombie Assault 4
Co-op alternative to Ultimate Zombie Defense 2 — playable with friends. Shares Action with Ultimate Zombie Defense 2.
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.
- 10
Nazi Zombies
Co-op alternative to Ultimate Zombie Defense 2 — playable with friends. Shares Action and Indie with Ultimate Zombie Defense 2.
Nazi Zombies is a cooperative survival game where players fend off escalating waves of Nazi zombies, earning points by killing zombies and repairing barriers to buy weapons, upgrades, perks, and unlock new map areas to maximize their survival.