Free games like Alien Destroyer
Below are 9 free-to-play Steam games similar to Alien Destroyer, 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 Alien Destroyer page.
Ranked picks
- 1
STRAFTAT
Free-to-play alternative to Alien Destroyer — no purchase or trial window. Shares Action with Alien Destroyer.
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.
- 2
Counter-Strike:Global Offensive
Free-to-play alternative to Alien Destroyer — no purchase or trial window. Shares Action with Alien Destroyer.
Counter-Strike:Global Offensive (CS:GO) expands upon the team-based action gameplay that it pioneered when it was launched over 2 decades ago. CS:GO features new maps, characters, weapons, and game modes, and delivers updated versions of the classic CS content (de_dust2, etc.).
- 3
The Lab
Free-to-play alternative to Alien Destroyer — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 4
erdetspill
Free-to-play alternative to Alien Destroyer — no purchase or trial window. Shares Action with Alien Destroyer.
Bestefar vil ha 2 is. Du må skaffe de. Det viser seg å være mer komplisert enn du trodde. Et absurd førstepersons-eventyrspill der du navigerer norsk byråkrati, snakker med rare folk og løser meningsløse oppdrag - i en liten norsk bygd.
- 5
Shape of Dreams: Prologue
Free-to-play alternative to Alien Destroyer — no purchase or trial window. Shares Action with Alien Destroyer.
《Shape of Dreams: Prologue》is a unique game that blends action roguelite with MOBA-style gameplay. Edit your character's Memories to create your own champion. Face all challenges alone or play with friends in up to 4-player co-op.
- 6
Nazi Zombies
Free-to-play alternative to Alien Destroyer — no purchase or trial window. Shares Action with Alien Destroyer.
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.
- 7
Tom Clancy's Rainbow Six Siege
Free-to-play alternative to Alien Destroyer — no purchase or trial window. Shares Action with Alien Destroyer.
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.
- 8
Warframe
Free-to-play alternative to Alien Destroyer — no purchase or trial window. Shares Action with Alien Destroyer.
Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game
- 9
Destiny 2
Free-to-play alternative to Alien Destroyer — no purchase or trial window. Shares Action with Alien Destroyer.
Destiny 2 is an action MMO with a single evolving world that you and your friends can join anytime, anywhere, absolutely free.