Single-player games like Area 51 Defense
Below are 10 single-player Steam games similar to Area 51 Defense, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Area 51 Defense page.
Ranked picks
- 1
Palpus X Annihilation
Single-player alternative to Area 51 Defense — playable solo, no multiplayer required. Shares Action and Indie with Area 51 Defense.
Isometric action shooter with light RPG elements. Brutally kill tons of alien monsters, find over a dozen powerful weapons, skill up your hero & stop the blood thirsty invaders in a classic handcrafted campaign. Never ending waves await you in horde-mode!
- 2
Lethal Dose
Single-player alternative to Area 51 Defense — playable solo, no multiplayer required. Shares Action and Indie with Area 51 Defense.
Fast Paced, Violent Top-Down Shooter. Magic Abilities. Difficult Levels. Twitchy Enemies. Level Editor.
- 3
Hatred
Single-player alternative to Area 51 Defense — playable solo, no multiplayer required. Shares Action and Indie with Area 51 Defense.
Hatred is a violent twin-stick shooter, in which you take the role of The Antagonist fighting against all of humanity.
- 4
Shadowgrounds
Single-player alternative to Area 51 Defense — playable solo, no multiplayer required. Shares Action with Area 51 Defense.
Shadowgrounds breathes fresh air into the action genre with explosive combat sequences, an innovative weapon upgrade system, and an intriguing storyline. The adrenaline-pumping, top-down gameplay and audiovisual fireworks set the scene for this new action experience which also includes single computer (split keyboard or joystick) co-op...
- 5
Alien Shooter TD
Single-player alternative to Area 51 Defense — playable solo, no multiplayer required. Shares Action and Indie with Area 51 Defense.
Innovative Tower Defense inspired by legendary Alien Shooter series! The game was created in keeping with the best traditions of Sigma`s games, no concessions of any kind - everything is just like in real life!
- 6
Let Them Come
Single-player alternative to Area 51 Defense — playable solo, no multiplayer required. Shares Action and Indie with Area 51 Defense.
Let Them Come is a fast paced pixel art shoot ‘em up. Twitchy trigger fingers and focused battle tactics are the order of the day as wave after wave of alien-like creatures try to take you down.
- 7
Shadowgrounds Survivor
Single-player alternative to Area 51 Defense — playable solo, no multiplayer required. Shares Action with Area 51 Defense.
Surviving is only half the game. The award-winning atmosphere and gameplay mechanics of the original Shadowgrounds make a triumphant return in this spin off/sequel armed with a slick new feature set! Shadowgrounds Survivor tells the story of the last remaining humans on Jupiter's moon Ganymede, where the alien onslaught is in full force.
- 8
Gunnheim
Single-player alternative to Area 51 Defense — playable solo, no multiplayer required. Shares Action and Indie with Area 51 Defense.
Dish out carnage of hellish proportions in Gunnheim, a top-down co-op shooter where the equation is simple: Vikings + Guns = Mayhem!
- 9
Kalaban
Single-player alternative to Area 51 Defense — playable solo, no multiplayer required. Shares Action and Indie with Area 51 Defense.
Horror-themed action-adventure set in alternate history Finland.
- 10
Enemy Remains
Single-player alternative to Area 51 Defense — playable solo, no multiplayer required. Shares Action with Area 51 Defense.
Atmospheric horror shooter, offering a blend of intense action and survival horror.