Single-player games like Protect the Earth
Below are 8 single-player Steam games similar to Protect the Earth, 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 Protect the Earth page.
Ranked picks
- 1
Destroiders
Single-player alternative to Protect the Earth — playable solo, no multiplayer required. Shares Action and Indie with Protect the Earth.
No nonsense, action packed, 2.5D, Asteroids inspired shooter. Scream around speeding rocks narrowly avoiding an untimely death as you obliterate rocks whilst harvesting their valuable resources. See how far you and your friends can get. Best played with mates but also pretty fun on your own.
- 2
Orbital Invaders
Single-player alternative to Protect the Earth — playable solo, no multiplayer required. Shares Action and Indie with Protect the Earth.
3D Sci-Fi arcade Shoot'em up game. Destroy asteroids and aliens. Shoot them all!3D arena shooter with multiple worlds. Spaceship simulator and shmup arcade style game.
- 3
DarkSpase
Single-player alternative to Protect the Earth — playable solo, no multiplayer required. Shares Action and Indie with Protect the Earth.
Galaga meets Tie Fighter meets Elite Dangerous. A sci-fi starfighter combat sim with NASA-accurate Keplerian orbits. Voyage across the Solar System with real-time FTL. Engage Dregg swarms in dynamic PvE encounters. Outmaneuver invaders by pushing Newtonian physics to the limit at 150 m/s.
- 4
REMOTE LIFE
Single-player alternative to Protect the Earth — playable solo, no multiplayer required. Shares Action and Indie with Protect the Earth.
Remote Life is a 2D Side scrolling space shooter (shmup) for PC. Experience a fast paced action game with insane scary graphics, and hyper jump into a brutal-frenetic-techno-alien world. Free the world from this dreadful nightmare before its nauseating breath of horror destroys mankind.
- 5
Arcade Mayhem Juanito
Single-player alternative to Protect the Earth — playable solo, no multiplayer required. Shares Action and Indie with Protect the Earth.
Arcade Mayhem Juanito is a retro experience about arcade-hopping. Teleport into different video games, play with unique mechanics inspired by well-known arcade games, face stunningly animated bosses and join the fight against the clonocell invasion.
- 6
Syder Arcade
Single-player alternative to Protect the Earth — playable solo, no multiplayer required. Shares Action and Indie with Protect the Earth.
Killing zombies never gets old, but sometimes you just need a break. Get back to some serious old-school gaming with Syder Arcade! Syder Arcade is a love letter to Amiga games of the ‘90s, no coins, no upgrade grinding, just your tenacity and a motherload of alien invaders.
- 7
Stardust Galaxy Warriors: Stellar Climax
Single-player alternative to Protect the Earth — playable solo, no multiplayer required. Shares Action and Indie with Protect the Earth.
Stardust Galaxy Warriors: Stellar Climax is a fast-paced couch co-op action shooter with SHMUP/Brawler gameplay and RPG elements. Choose your mechs, weapons & upgrades then soar through space, defeat evil & save the future... from itself!
- 8
Void Miner – Incremental Asteroids Roguelite
Single-player alternative to Protect the Earth — playable solo, no multiplayer required. Shares Action and Indie with Protect the Earth.
Blast. Collect. Upgrade. Repeat. Void Miner is a retro-inspired roguelite asteroid shooter where you pilot a space ship and manage an automated tower to destroy endless fields of chaos. Dodge, blast, and harvest your way through waves of asteroids in a fast-paced loop of destruction and progression.