Free games like Nebula Invasion

Below are 8 free-to-play Steam games similar to Nebula Invasion, 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 Nebula Invasion page.

1
Bongo Cat
Free-to-play alternative to Nebula Invasion — no purchase or trial window. Shares Indie with Nebula Invasion.
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
STRAFTAT
Free-to-play alternative to Nebula Invasion — no purchase or trial window. Shares Action with Nebula Invasion.
STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.
2024ActionFreeDeck PlayableFree to playSimilar games →
3
Awaria
Free-to-play alternative to Nebula Invasion — no purchase or trial window. Shares Action and Indie with Nebula Invasion.
Awaria is a short game about working in haunted maintenance tunnels.
2024ActionIndieFree To PlayFreeDeck PlayableFree to playSimilar games →
4
The Expendabros
Free-to-play alternative to Nebula Invasion — no purchase or trial window. Shares Action and Indie with Nebula Invasion.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
2014ActionIndieAdventureFreeDeck VerifiedFree to playSimilar games →
5
Steam Engine Simulator
Free-to-play alternative to Nebula Invasion — no purchase or trial window.
The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.
2023SimulationFreeDeck VerifiedFree to playSimilar games →
6
Iron Snout
Free-to-play alternative to Nebula Invasion — no purchase or trial window. Shares Action and Indie with Nebula Invasion.
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 →
7
UNBEATABLE [white label]
Free-to-play alternative to Nebula Invasion — no purchase or trial window. Shares Action and Indie with Nebula Invasion.
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 →
8
Star Fetchers
Free-to-play alternative to Nebula Invasion — no purchase or trial window. Shares Action and Indie with Nebula Invasion.
The introduction to a wild ride with gangsters and deep state conspiracy theories
2020ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →

Ranked picks