IMHO.

Games like Protect the Earth

If Protect the Earth is your kind of game, the closest matches are Destroiders, Orbital Invaders and DarkSpase — picked from the ranked list below. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.

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About Protect the Earth: You are the best pilot in the space force and the earth needs you to protect itself from an alien attack. Protect the earth and then go to the invader's planet to finish them off once and for all.

2021ActionIndieCasual3.99 USDWindowsby Victor
Protect the Earth — Steam game cover

Players who liked Protect the Earth also play

Steam players who put hours into Protect the Earth also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.

  1. Destroiders

    WHY THIS

    Top pick for Protect the Earth fans by collaborative filtering across millions of Steam libraries. 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.

    2023ActionIndieCasual3.99 USDSteam ↗
  2. Orbital Invaders

    WHY THIS

    Second-strongest match for Protect the Earth fans by collaborative filtering across millions of Steam libraries. 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.

    2020ActionIndieCasual0.99 USDSteam ↗
  3. DarkSpase

    WHY THIS

    Third-strongest match for Protect the Earth fans by collaborative filtering across millions of Steam libraries. 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.

    2025ActionIndieSimulation19.99 USDSteam ↗
  4. REMOTE LIFE

    WHY THIS

    Ranked #4 for Protect the Earth fans by collaborative filtering across millions of Steam libraries. 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.

    2019ActionIndieSteam ↗
  5. Arcade Mayhem Juanito

    WHY THIS

    Ranked #5 for Protect the Earth fans by collaborative filtering across millions of Steam libraries. 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.

    2017ActionIndieAdventure9.99 USDSteam ↗
  6. Syder Arcade

    WHY THIS

    Ranked #6 for Protect the Earth fans by collaborative filtering across millions of Steam libraries. 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.

    2013ActionIndie9.99 USDDeck PlayableSteam ↗
  7. Stardust Galaxy Warriors: Stellar Climax

    WHY THIS

    Ranked #7 for Protect the Earth fans by collaborative filtering across millions of Steam libraries. 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!

    2015ActionIndieAdventure9.99 USDDeck VerifiedSteam ↗
  8. Void Miner – Incremental Asteroids Roguelite

    WHY THIS

    Ranked #8 for Protect the Earth fans by collaborative filtering across millions of Steam libraries. 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.

    2025ActionStrategyIndie5.99 USDDeck VerifiedSteam ↗

Cheaper alternatives

Games in the same vein priced at least 40% below Protect the Earth at current Steam store prices.

  1. POSTAL 2

    WHY THIS

    Priced ~75% under Protect the Earth on Steam right now. Shares Action and Indie with Protect the Earth.

    Live a week in the life of "The POSTAL Dude"; a hapless everyman just trying to check off some chores. Buying milk, returning an overdue library book, getting Gary Coleman's autograph, what could possibly go wrong?

    2012ActionIndieAdventure0.99 USDDeck VerifiedSteam ↗
  2. The Test

    WHY THIS

    Priced ~50% under Protect the Earth on Steam right now. Shares Indie with Protect the Earth.

    You will answer a series of questions that will reveal truths from deep within. These questions may make you uncomfortable, but with great knowledge comes great sacrifice. Can you make it all the way through The Test, and if you do, are you sure you want the answers you seek?

    2020IndieAdventureSimulation1.99 USDDeck VerifiedSteam ↗
  3. Milk inside a bag of milk inside a bag of milk

    WHY THIS

    Priced ~63% under Protect the Earth on Steam right now. Shares Indie with Protect the Earth.

    A short story about what sort of challenges everyday little things can be. Help the girl buy milk, be the first not to disappoint her.

    2020IndieAdventure1.49 USDDeck PlayableSteam ↗
  4. Blood and Bacon

    WHY THIS

    Priced ~75% under Protect the Earth on Steam right now. Shares Action and Casual with Protect the Earth.

    This Co-op Shooter , has Day and Night levels, multiple maps, players will take on 25 enemy types and numerous bosses, like Gargantuan Monsters and Minibosses every 10 days as you explore, shoot and run for your life against the onslaught of porcine monstrosities.

    2016ActionAdventureCasual0.99 USDSteam ↗
  5. Placid Plastic Duck Simulator

    WHY THIS

    Priced ~50% under Protect the Earth on Steam right now. Shares Casual with Protect the Earth.

    The ultimate high-tech rubber duck simulation, Placid Plastic Duck brings you dangerous levels of relaxation. With chill music, dreamy 3D graphics, and many different happy ducks, your only priority is to float around. Zero Ducks given.

    2022SimulationCasual1.99 USDDeck VerifiedSteam ↗
  6. Peggle Deluxe

    WHY THIS

    Priced ~75% under Protect the Earth on Steam right now. Shares Casual with Protect the Earth.

    Take your best shot with energizing arcade fun! Aim, shoot, clear the orange pegs, then sit back and cheer as 10 whimsical teachers guide you to Peggle greatness.

    2007Casual0.99 USDDeck PlayableSteam ↗
  7. shapez

    WHY THIS

    Priced ~75% under Protect the Earth on Steam right now. Shares Indie and Casual with Protect the Earth.

    shapez is an easy-going, minimalistic factory building game about the automation of shapes through extraction and satisfying production lines. Adapt to increasingly complex shapes and grow your factory across an infinitely expanding map. Your only limitation is your creativity!

    2020StrategyIndieSimulation0.99 USDDeck PlayableSteam ↗
  8. The Test: Hypothesis Rising

    WHY THIS

    Priced ~50% under Protect the Earth on Steam right now. Shares Indie with Protect the Earth.

    The second chapter in The Test trilogy. Answer a series of in-depth questions to reveal hidden truths about yourself and unlock secrets to discover how your life can change drastically with just a few, slight modifications. ...But are you sure you want the answers you seek?

    2020IndieAdventureSimulation1.99 USDDeck VerifiedSteam ↗

Free alternatives

Free-to-play games that recommended players of this title also tend to enjoy.

  1. Life is Strange - Episode 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Protect the Earth.

    Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.

    2015ActionAdventureFreeDeck PlayableSteam ↗
  2. Indigo Park: Chapter 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Protect the Earth.

    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 PlayableSteam ↗
  3. STRAFTAT

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Protect the Earth.

    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 PlayableSteam ↗
  4. Awaria

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Protect the Earth.

    Awaria is a short game about working in haunted maintenance tunnels.

    2024ActionIndieFree To PlayFreeDeck PlayableSteam ↗
  5. The Expendabros

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Protect the Earth.

    The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.

    2014ActionIndieAdventureFreeDeck VerifiedSteam ↗
  6. Iron Snout

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Protect the Earth.

    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 PlayableSteam ↗
  7. UNBEATABLE [white label]

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action and Indie with Protect the Earth.

    A young girl learns a song. An exclusive side-story set in the world of D-CELL GAMES' upcoming rhythm-adventure.

    2021ActionIndieAdventureFreeDeck PlayableSteam ↗
  8. Magic Archery

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Protect the Earth.

    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 PlayableSteam ↗

Frequently asked about Protect the Earth

How much does Protect the Earth cost?
Protect the Earth is listed on Steam at 3.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Protect the Earth?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Protect the Earth are Destroiders, Orbital Invaders, DarkSpase.
Who developed Protect the Earth?
Protect the Earth was developed by Victor.

imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Protect the Earth.

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