Free games like Space Defense

Below are 8 free-to-play Steam games similar to Space Defense, 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 Space Defense page.

1
Bongo Cat
Free-to-play alternative to Space Defense — no purchase or trial window. Shares Indie with Space Defense.
Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?
2025IndieSimulationMassively MultiplayerFreeDeck PlayableFree to playSimilar games →
2
Indigo Park: Chapter 1
Free-to-play alternative to Space Defense — no purchase or trial window. Shares Action and Indie with Space Defense.
Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.
2024ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
3
Awaria
Free-to-play alternative to Space Defense — no purchase or trial window. Shares Action and Indie with Space Defense.
Awaria is a short game about working in haunted maintenance tunnels.
2024ActionIndieFree To PlayFreeDeck PlayableFree to playSimilar games →
4
Iron Snout
Free-to-play alternative to Space Defense — no purchase or trial window. Shares Action and Indie with Space Defense.
Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.
2016ActionIndieFree To PlayFreeDeck PlayableFree to playSimilar games →
5
UNBEATABLE [white label]
Free-to-play alternative to Space Defense — no purchase or trial window. Shares Action and Indie with Space Defense.
A young girl learns a song. An exclusive side-story set in the world of D-CELL GAMES' upcoming rhythm-adventure.
2021ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
6
Magic Archery
Free-to-play alternative to Space Defense — no purchase or trial window. Shares Indie with Space Defense.
Train a commoner to become the greatest archer in this short incremental game! Increase your stats, gather wealth from quests, buy upgrades, and infuse your arrows with magic.
2024IndieSimulationRPGFreeDeck PlayableFree to playSimilar games →
7
Coloring Pixels
Free-to-play alternative to Space Defense — no purchase or trial window. Shares Indie and Casual with Space Defense.
A relaxing coloring by numbers game. Enjoy completing a variety of images with differing themes, complexity, and sizes.
2018IndieFree To PlayCasualFreeFree to playSimilar games →
8
Eternal Senia
Free-to-play alternative to Space Defense — no purchase or trial window. Shares Action and Indie with Space Defense.
Thoughts and expectations ARPG
2015ActionIndieRPGFreeDeck PlayableFree to playSimilar games →

Ranked picks