Free games like ZeroSpace
Below are 10 free-to-play Steam games similar to ZeroSpace, 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 ZeroSpace page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to ZeroSpace — no purchase or trial window. Shares Action and Indie with ZeroSpace.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
Eternal Senia
Free-to-play alternative to ZeroSpace — no purchase or trial window. Shares Action and Indie with ZeroSpace.
Thoughts and expectations ARPG
- 3
The Riftbreaker: Prologue
Free-to-play alternative to ZeroSpace — no purchase or trial window. Shares Action and Strategy with ZeroSpace.
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.
- 4
DFHack - Dwarf Fortress Modding Engine
Free-to-play alternative to ZeroSpace — no purchase or trial window. Shares Strategy and Simulation with ZeroSpace.
Extensions for Dwarf Fortress, including bugfixes, interface improvements, automation agents, design blueprints, modding building blocks, and other tools.
- 5
Nazi Zombies
Free-to-play alternative to ZeroSpace — no purchase or trial window. Shares Action and Indie with ZeroSpace.
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.
- 6
Counter-Strike 2
Free-to-play alternative to ZeroSpace — no purchase or trial window. Shares Action with ZeroSpace.
For over two decades, Counter-Strike has offered an elite competitive experience, one shaped by millions of players from across the globe. And now the next chapter in the CS story is about to begin. This is Counter-Strike 2.
- 7
Dota 2
Free-to-play alternative to ZeroSpace — no purchase or trial window. Shares Action and Strategy with ZeroSpace.
Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has taken on a life of its own.
- 8
Tom Clancy's Rainbow Six Siege
Free-to-play alternative to ZeroSpace — no purchase or trial window. Shares Action with ZeroSpace.
Rainbow Six® Siege is the reference in tactical team shooters, where elite strategy and execution triumph. Enjoy free access to Quick Match, Unranked, and Dual Front game modes with a selection of operators.
- 9
SolPlex: Dominion
Free-to-play alternative to ZeroSpace — no purchase or trial window. Shares Strategy and Indie with ZeroSpace.
From a single colony to a galactic empire, every expansion strengthens your economy, your military and your influence as you battle for dominance in a persistent MMO galaxy.
- 10
TON Wars
Free-to-play alternative to ZeroSpace — no purchase or trial window. Shares Strategy and Massively Multiplayer with ZeroSpace.
Build a planetary empire, research game-changing tech, and raid real players across a persistent galaxy. The classic browser space strategy, reborn - and finally fair: no pay-to-win, ever. Team up for 8-fleet combined attacks. Your mines keep working while you sleep.