IMHO.

Games like Sentinel 3: Homeworld

If Sentinel 3: Homeworld is your kind of game, the closest matches are Sentinel 4: Dark Star, Unstoppable Gorg and Anomaly Defenders — picked from the ranked list below. Reviewers single out its gates force tactical positioning, challenging and nostalgic. 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 Sentinel 3: Homeworld: The biggest installment of the award winning Sentinel sci-fi tower defense series now on PC!Take the fight to the alien homeworld and unleash a massive arsenal of weaponry. Get up close and personal on the battlefield in your power armor to execute devastating attacks and support your defenses! * An epic campaign across 20 levels.

2014StrategyIndie5.99 USDWindowsby Origin8
Sentinel 3: Homeworld — Steam game cover
Players highlight
Commander unit adds strategic depthGains new towers and abilities over timeGates force tactical positioningChallengingNostalgicRetro

Players who liked Sentinel 3: Homeworld also play

Steam players who put hours into Sentinel 3: Homeworld 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. Sentinel 4: Dark Star

    WHY THIS

    Shares a challenging mood with Sentinel 3: Homeworld.

    Top pick for Sentinel 3: Homeworld fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 3: Homeworld.

    Want a tactical and strategic tower defense challenge that's packed with options and upgrades? Take command of the dropship Sentinel and do battle across a vibrant sci-fi world.

    2015StrategyIndie6.99 USDSteam ↗
  2. Unstoppable Gorg

    WHY THIS

    Shares a challenging mood with Sentinel 3: Homeworld.

    Second-strongest match for Sentinel 3: Homeworld fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 3: Homeworld.

    Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!

    2012ActionStrategyIndie9.99 USDSteam ↗
  3. Anomaly Defenders

    WHY THIS

    Shares a challenging mood with Sentinel 3: Homeworld.

    Third-strongest match for Sentinel 3: Homeworld fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 3: Homeworld.

    Anomaly Defenders is the closing installment of the Anomaly series. The original incarnation of the Tower Offense sub-genre had players controlling humans fighting alien invaders. Now, the tables have turned. The human counterattack is underway and the alien homeworld is under threat.

    2014ActionStrategyIndie9.99 USDSteam ↗
  4. Defense Grid: The Awakening

    WHY THIS

    Shares a nostalgic mood with Sentinel 3: Homeworld.

    Ranked #4 for Sentinel 3: Homeworld fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 3: Homeworld.

    Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.

    2008StrategyIndie9.99 USDDeck PlayableSteam ↗
  5. Space Run

    WHY THIS

    Shares a challenging mood with Sentinel 3: Homeworld.

    Ranked #5 for Sentinel 3: Homeworld fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 3: Homeworld.

    Space Run is a «real-time spaceship construction strategy game». Space Run takes the well-known Tower Defense-style gameplay and twists it, challenging you to manage and protect a spaceship and its cargo against the hazards of deep space!

    2014StrategyIndie4.99 USDSteam ↗
  6. Super Sanctum TD

    WHY THIS

    Shares tower upgrades and a retro mood with Sentinel 3: Homeworld.

    Ranked #6 for Sentinel 3: Homeworld fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 3: Homeworld.

    Super Sanctum TD is a retro-styled Tower Defense game that focuses on strategy, customization and replayability. Build advanced mazes and construct powerful towers to prevent alien hordes from reaching the Core!

    2013StrategyIndieCasual0.99 USDDeck PlayableSteam ↗
  7. M.A.C.E. Tower Defense

    WHY THIS

    Shares a challenging mood with Sentinel 3: Homeworld.

    Ranked #7 for Sentinel 3: Homeworld fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 3: Homeworld.

    M.A.C.E. Tower Defense is a classic tower defense game with unique towers and enemies and an ingame shop system for getting better towers, upgrade existing towers and buy special items.

    2017ActionStrategyIndie2.99 USDSteam ↗
  8. X-Morph: Defense

    WHY THIS

    Shares a challenging mood with Sentinel 3: Homeworld.

    Ranked #8 for Sentinel 3: Homeworld fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 3: Homeworld.

    Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.

    2017ActionStrategyIndie3.99 USDDeck PlayableSteam ↗

Cheaper alternatives

Games in the same vein priced at least 40% below Sentinel 3: Homeworld at current Steam store prices.

  1. POSTAL 2

    WHY THIS

    Priced ~83% under Sentinel 3: Homeworld on Steam right now. Shares Indie with Sentinel 3: Homeworld.

    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. Buckshot Roulette

    WHY THIS

    Priced ~50% under Sentinel 3: Homeworld on Steam right now. Shares Indie with Sentinel 3: Homeworld.

    Play Russian roulette with a 12-gauge shotgun. Four enter. One leaves. Roll the dice with your life. Good luck!

    2024ActionIndieSimulation2.99 USDDeck PlayableSteam ↗
  3. The Test

    WHY THIS

    Priced ~67% under Sentinel 3: Homeworld on Steam right now. Shares Indie with Sentinel 3: Homeworld.

    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 ↗
  4. Milk inside a bag of milk inside a bag of milk

    WHY THIS

    Priced ~75% under Sentinel 3: Homeworld on Steam right now. Shares Indie with Sentinel 3: Homeworld.

    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 ↗
  5. Crypt of the NecroDancer

    WHY THIS

    Priced ~50% under Sentinel 3: Homeworld on Steam right now. Shares Indie with Sentinel 3: Homeworld.

    Crypt of the NecroDancer is an award winning hardcore roguelike rhythm game. Move to the music and deliver beatdowns to the beat! Groove to the epic Danny Baranowsky soundtrack, or select songs from your own MP3 collection!

    2015ActionIndieRPG2.99 USDDeck VerifiedSteam ↗
  6. Super Hexagon

    WHY THIS

    Priced ~50% under Sentinel 3: Homeworld on Steam right now. Shares Indie with Sentinel 3: Homeworld.

    Super Hexagon is a minimal action game by Terry Cavanagh, with music by Chipzel.

    2012ActionIndie2.99 USDDeck VerifiedSteam ↗
  7. Nodebuster

    WHY THIS

    Priced ~50% under Sentinel 3: Homeworld on Steam right now. Shares Strategy and Indie with Sentinel 3: Homeworld.

    Nodebuster is a short, experimental incremental game about busting nodes and destroying reality.

    2024StrategyIndieSimulation2.99 USDDeck PlayableSteam ↗
  8. Sally Face - Episode One

    WHY THIS

    Priced ~50% under Sentinel 3: Homeworld on Steam right now. Shares Indie with Sentinel 3: Homeworld.

    Delve into a dark adventure following the boy with a prosthetic face and a tragic past. Unravel the sinister mysteries of Sally's world to find the truth that lies hidden beneath the shadows.

    2016IndieAdventure2.99 USDDeck VerifiedSteam ↗

Free alternatives

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

  1. The Riftbreaker: Prologue

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Indie with Sentinel 3: Homeworld.

    The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.

    2020ActionStrategyIndieFreeDeck PlayableSteam ↗
  2. SCP: Secret Laboratory

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Sentinel 3: Homeworld.

    Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape.

    2017ActionIndieRPGFreeDeck PlayableSteam ↗
  3. Splitgate

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Sentinel 3: Homeworld.

    Splitgate is a free-to-play, fast-paced multiplayer shooter that features player-controlled portals. This sci-fi shooter takes the FPS genre to a new dimension with its portal mechanics, delivering high-flying, multi-dimensional combat.

    2019ActionIndieFree To PlayFreeSteam ↗
  4. Bloons TD Battles 2

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Indie with Sentinel 3: Homeworld.

    From the creators of Bloons TD6... Bloons TD Battles 2 is a brand new installment of the top-rated head-to-head tower defense game. Gather your Hero, choose your team of powerful Monkey Towers, and prepare to battle one on one against other players and relentless waves of Bloons!

    2021ActionStrategyIndieFreeDeck PlayableSteam ↗
  5. Bloons TD Battles

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy with Sentinel 3: Homeworld.

    Go head to head with other players in a Bloon-popping battle for victory. From the creators of best-selling Bloons TD 5, this all new Battles game is specially designed for multiplayer combat, featuring the ability to control bloons directly and send them charging past your opponent's defenses.

    2016ActionStrategyFree To PlayFreeDeck PlayableSteam ↗
  6. Endless Sky

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Sentinel 3: Homeworld.

    Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.

    2015ActionIndieAdventureFreeDeck PlayableSteam ↗
  7. Yet Another Zombie Defense

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Indie with Sentinel 3: Homeworld.

    Darkness is coming. How long can YOU survive? Build your base by day, defend it by night. Play in online or local co-op. Stay alive as long as you can.

    2014ActionStrategyIndieFreeSteam ↗
  8. AirMech

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Indie with Sentinel 3: Homeworld.

    AirMech® Strike is a fast paced Action-RTS game that can be played solo, coop, or competitively online. Earn Kudos and Experience in battle and unlock a wide collection of AirMechs and Units while you practice the perfect strategy to emerge victorious!

    2018ActionStrategyIndieFreeSteam ↗

Frequently asked about Sentinel 3: Homeworld

How much does Sentinel 3: Homeworld cost?
Sentinel 3: Homeworld is listed on Steam at 5.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Sentinel 3: Homeworld?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Sentinel 3: Homeworld are Sentinel 4: Dark Star, Unstoppable Gorg, Anomaly Defenders.
Who developed Sentinel 3: Homeworld?
Sentinel 3: Homeworld was developed by Origin8 and published by Strategy First.

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 Sentinel 3: Homeworld.

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24 Games Like Sentinel 3: Homeworld — Ranked for 2026 · imho.run