Free games like Zombie Army Trilogy
Below are 8 free-to-play Steam games similar to Zombie Army Trilogy, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Zombie Army Trilogy page.
Ranked picks
- 1

No More Room in Hell
Free-to-play alternative to Zombie Army Trilogy — no purchase or trial window. Shares Action with Zombie Army Trilogy.
The chances of you surviving this all out war of society and the undead are slim to none. Already, there are millions of the walking dead shambling about, searching for food to eat. There's no known cure. One bite can possibly end it all for you. However, you aren't alone in this nightmare.
- 2

Codename CURE
Free-to-play alternative to Zombie Army Trilogy — no purchase or trial window. Shares Action with Zombie Army Trilogy.
Codename CURE is a first person, co-operative zombie game with support for up to five players, providing dynamic, fast-paced zombie fragging with both objective, and survival-based missions.
- 3

Zumbi Blocks 2 Open Alpha
Free-to-play alternative to Zombie Army Trilogy — no purchase or trial window. Shares Action with Zombie Army Trilogy.
Loot. Kill. Survive. Can you escape ? (probably not) Zumbi Blocks 2 is the official sequel to the 2013 free browser zombie game. Stuck on an island, cut off from the rest of humanity, you wake up. The secret to breaking free from this place lies asleep, underground. From the soil, zumbies emerge.
- 4

I MAED A GAM3 W1TH Z0MB1ES 1N IT!!!1
Free-to-play alternative to Zombie Army Trilogy — no purchase or trial window. Shares Action with Zombie Army Trilogy.
A top down twin stick zombie slaying shooter that you are sure to play again and again!
- 5

SAS: Zombie Assault 4
Free-to-play alternative to Zombie Army Trilogy — no purchase or trial window. Shares Action with Zombie Army Trilogy.
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.
- 6

死寂(Deathly Stillness)
Free-to-play alternative to Zombie Army Trilogy — no purchase or trial window. Shares Action with Zombie Army Trilogy.
This is a boring zombie game with no plot, not an officially released game, please don't have high expectations.
- 7

Unturned
Free-to-play alternative to Zombie Army Trilogy — no purchase or trial window. Shares Action with Zombie Army Trilogy.
You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living.
- 8

CS2D
Free-to-play alternative to Zombie Army Trilogy — no purchase or trial window. Shares Action with Zombie Army Trilogy.
CS2D is a free fast-paced top-down multiplayer shooter. Featuring many different game modes, a built-in map editor and much more.