Free games like Undead Development
Below are 8 free-to-play Steam games similar to Undead Development, 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 Undead Development page.
Ranked picks
- 1

Ultimate Custom Night
Free-to-play alternative to Undead Development — no purchase or trial window. Shares Action and Indie with Undead Development.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2

The Riftbreaker: Prologue
Free-to-play alternative to Undead Development — no purchase or trial window. Shares Action and Indie with Undead Development.
The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.
- 3

Unturned
Free-to-play alternative to Undead Development — no purchase or trial window. Shares Action and Indie with Undead Development.
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.
- 4

Muck
Free-to-play alternative to Undead Development — no purchase or trial window. Shares Action and Indie with Undead Development.
Muck is a survival-roguelike. Collect resources, find items & build a base to survive for as long as you can.
- 5

Totally Accurate Battlegrounds
Free-to-play alternative to Undead Development — no purchase or trial window. Shares Action and Indie with Undead Development.
Grab your balloon crossbow and trusty inflatable hammer, because things are about to get wobbly! Be the last weirdo standing in the world-leading physics-based Battle Royale game.
- 6

Cry of Fear
Free-to-play alternative to Undead Development — no purchase or trial window. Shares Action and Indie with Undead Development.
Cry of Fear is a psychological single-player and co-op horror game set in a deserted town filled with horrific creatures and nightmarish delusions. You play as a young man desperately searching for answers in the cold Scandinavian night, finding his way through the city as he slowly descends into madness.
- 7

Fallout Shelter
Free-to-play alternative to Undead Development — no purchase or trial window. Shares Simulation with Undead Development.
Fallout Shelter puts you in control of a state-of-the-art underground Vault from Vault-Tec. Build the perfect Vault, keep your Dwellers happy, and protect them from the dangers of the Wasteland.
- 8

No More Room in Hell
Free-to-play alternative to Undead Development — no purchase or trial window. Shares Action and Indie with Undead Development.
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.