IMHO.

Games like Sentinel 4: Dark Star

If Sentinel 4: Dark Star is your kind of game, the closest matches are Sol Survivor, Anomaly Defenders and DG2: Defense Grid 2 — picked from the ranked list below. Reviewers single out its atmospheric, challenging and contemplative. 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 4: Dark Star: 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 USDWindowsby Origin8 Technologies Ltd
Sentinel 4: Dark Star — Steam game cover
Players highlight
Base abilities add a second layer of tacticsDestructible turrets force mid game adaptationPermanent upgrades reshape your entire strategyAtmosphericChallengingContemplative

Players who liked Sentinel 4: Dark Star also play

Steam players who put hours into Sentinel 4: Dark Star 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. Sol Survivor

    WHY THIS

    Shares an atmospheric mood with Sentinel 4: Dark Star.

    Top pick for Sentinel 4: Dark Star fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 4: Dark Star.

    Jump in to intense turret defense action with Sol Survivor! Build turrets to defend your colony and the innocent colonists within. Smash enemies with volleys of actively-controlled orbital support. Play with friends in co-operative and competitive multiplayer matches or test your mettle against our new Survival mode!

    2010StrategyIndieDeck PlayableSteam ↗
  2. Anomaly Defenders

    WHY THIS

    Shares an atmospheric mood with Sentinel 4: Dark Star.

    Second-strongest match for Sentinel 4: Dark Star fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 4: Dark Star.

    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 ↗
  3. DG2: Defense Grid 2

    WHY THIS

    Shares an immersive mood with Sentinel 4: Dark Star.

    Third-strongest match for Sentinel 4: Dark Star fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 4: Dark Star.

    Great strategy is timeless. Build, adapt, and defend across dynamic maps, solo or online - every session brings new strategies, new solutions, and new surprises. Now is the perfect time to enter the grid.

    2014StrategyIndie9.99 USDDeck VerifiedSteam ↗
  4. Sanctum 2

    WHY THIS

    Shares an immersive mood with Sentinel 4: Dark Star.

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

    Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.

    2013ActionStrategyIndie14.99 USDDeck VerifiedSteam ↗
  5. Infested Planet

    WHY THIS

    Shares an immersive mood with Sentinel 4: Dark Star.

    Ranked #5 for Sentinel 4: Dark Star fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 4: Dark Star.

    Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.

    2014ActionStrategyIndie14.99 USDDeck PlayableSteam ↗
  6. Anomaly: Warzone Earth

    WHY THIS

    Shares an atmospheric mood with Sentinel 4: Dark Star.

    Ranked #6 for Sentinel 4: Dark Star fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 4: Dark Star.

    Lead an armored squad through the perils of this reversed tower defense action-strategy game!

    2011ActionStrategyIndie9.99 USDSteam ↗
  7. Sanctum

    WHY THIS

    Shares a contemplative mood with Sentinel 4: Dark Star.

    Ranked #7 for Sentinel 4: Dark Star fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 4: Dark Star.

    You think Tower Defense games are all about building? You thought wrong. Sanctum is not your average Tower Defense title. When the havoc starts, you get to join the fray! As one of the world’s first First Person Shooter - Tower Defense games, Sanctum has taken the best of both worlds to deliver an epic, one-of-a-kind experience.

    2011ActionStrategyIndie9.99 USDDeck PlayableSteam ↗
  8. Unstoppable Gorg

    WHY THIS

    Shares an atmospheric mood with Sentinel 4: Dark Star.

    Ranked #8 for Sentinel 4: Dark Star fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Sentinel 4: Dark Star.

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

    2012ActionStrategyIndie9.99 USDSteam ↗

Reviewers mention these as similar to Sentinel 4: Dark Star

Surfaced from review text: when other players write 'if you liked X, try Y', we catch the name and resolve it back to a Steam game.

  1. Prime World: Defenders

    WHY THIS

    Shares an atmospheric mood with Sentinel 4: Dark Star.

    Reviewers of Sentinel 4: Dark Star cross-mention this title as a similar play. Shares Strategy and Indie with Sentinel 4: Dark Star.

    Fight off hordes of monstrous mutants created from a strange cataclysmic event in the new tower defense game, Prime World: Defenders. Join a group of exile treasure hunters who have ventured into the capital of an ancient empire, vast with mystery and danger.

    2013StrategyIndieRPG9.99 USDDeck PlayableSteam ↗
  2. Total Annihilation

    WHY THIS

    Shares a challenging mood with Sentinel 4: Dark Star.

    Reviewers of Sentinel 4: Dark Star cross-mention this title as a similar play. Shares Strategy with Sentinel 4: Dark Star.

    What began as a conflict over the transfer of consciousness from flesh to machines escalated into a war which has decimated a million worlds. The Core and the Arm have all but exhausted the resources of a galaxy in their struggle for domination.

    2015Strategy4.99 USDSteam ↗
  3. DG2: Defense Grid 2

    WHY THIS

    Shares an immersive mood with Sentinel 4: Dark Star.

    Reviewers of Sentinel 4: Dark Star cross-mention this title as a similar play. Shares Strategy and Indie with Sentinel 4: Dark Star.

    Great strategy is timeless. Build, adapt, and defend across dynamic maps, solo or online - every session brings new strategies, new solutions, and new surprises. Now is the perfect time to enter the grid.

    2014StrategyIndie9.99 USDDeck VerifiedSteam ↗
  4. Sole Survivor: Stages of Death

    WHY THIS

    Reviewers of Sentinel 4: Dark Star cross-mention this title as a similar play.

    The sole survivor stages of death are a whole new game; there are so many ways to kill yourself.

    2021ActionAdventure3.99 USDSteam ↗
  5. Sentinel 3: Homeworld

    WHY THIS

    Shares a challenging mood with Sentinel 4: Dark Star.

    Reviewers of Sentinel 4: Dark Star cross-mention this title as a similar play. Shares Strategy and Indie with Sentinel 4: Dark Star.

    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 USDSteam ↗
  6. Sol Survivor

    WHY THIS

    Shares an atmospheric mood with Sentinel 4: Dark Star.

    Reviewers of Sentinel 4: Dark Star cross-mention this title as a similar play. Shares Strategy and Indie with Sentinel 4: Dark Star.

    Jump in to intense turret defense action with Sol Survivor! Build turrets to defend your colony and the innocent colonists within. Smash enemies with volleys of actively-controlled orbital support. Play with friends in co-operative and competitive multiplayer matches or test your mettle against our new Survival mode!

    2010StrategyIndieDeck PlayableSteam ↗
  7. Sentinel

    WHY THIS

    Shares an atmospheric mood with Sentinel 4: Dark Star.

    Reviewers of Sentinel 4: Dark Star cross-mention this title as a similar play. Shares Strategy and Indie with Sentinel 4: Dark Star.

    Sentinel is an interactive audio tower defense game. It mixes strategic gameplay with a dynamic music system.

    2014StrategyIndieFreeDeck VerifiedSteam ↗

Cheaper alternatives

Games in the same vein priced at least 40% below Sentinel 4: Dark Star at current Steam store prices.

  1. POSTAL 2

    WHY THIS

    Priced ~86% under Sentinel 4: Dark Star on Steam right now. Shares Indie with Sentinel 4: Dark Star.

    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 ~57% under Sentinel 4: Dark Star on Steam right now. Shares Indie with Sentinel 4: Dark Star.

    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. GRIS

    WHY THIS

    Priced ~46% under Sentinel 4: Dark Star on Steam right now. Shares Indie with Sentinel 4: Dark Star.

    Gris is a hopeful young girl lost in her own world, dealing with a painful experience in her life. Her journey through sorrow is manifested in her dress, which grants new abilities to better navigate her faded reality.

    2018IndieAdventure3.74 USDDeck VerifiedSteam ↗
  4. The Test

    WHY THIS

    Priced ~72% under Sentinel 4: Dark Star on Steam right now. Shares Indie with Sentinel 4: Dark Star.

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

    WHY THIS

    Priced ~79% under Sentinel 4: Dark Star on Steam right now. Shares Indie with Sentinel 4: Dark Star.

    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 ↗
  6. Crypt of the NecroDancer

    WHY THIS

    Priced ~57% under Sentinel 4: Dark Star on Steam right now. Shares Indie with Sentinel 4: Dark Star.

    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 ↗
  7. A Short Hike

    WHY THIS

    Priced ~43% under Sentinel 4: Dark Star on Steam right now. Shares Indie with Sentinel 4: Dark Star.

    Hike, climb, and soar through the peaceful mountainside landscapes of Hawk Peak Provincial Park as you make your way to the summit.

    2019IndieAdventure3.99 USDDeck VerifiedSteam ↗
  8. Super Hexagon

    WHY THIS

    Priced ~57% under Sentinel 4: Dark Star on Steam right now. Shares Indie with Sentinel 4: Dark Star.

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

    2012ActionIndie2.99 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 4: Dark Star.

    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. Sporadic Spire

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Indie with Sentinel 4: Dark Star.

    Defeat hordes of enemies in this aesthetic tower defense game. The random terrain generation provides a beautiful environment and a unique experience every time you play.

    2020ActionStrategyIndieFreeSteam ↗
  3. Dropzone

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy with Sentinel 4: Dark Star.

    Dropzone is a game of action, strategy and skill. Win 15 minute battles by scoring points. Unlock gear, customize your squad of up to 3 Units and compete in Team 3v3, 2v2 or 1v1 matches. Lay claim to the riches of Europa!

    2017ActionStrategyFree To PlayFreeSteam ↗
  4. Tep The Destroyer TD

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Indie with Sentinel 4: Dark Star.

    TEP the destroyer is a single player tower defense game where you will face alien monsters and ships in ground and space battles! Your strategy will decide the fate of your people in a sci-fi environment of varying difficulties!

    2022StrategyIndieCasualFreeDeck PlayableSteam ↗
  5. Throbax TD

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Indie with Sentinel 4: Dark Star.

    Throbax TD is the "Tower Defense" game you are looking for: Help Ughlar fight his way through 50 levels, buy over 100 upgrades and get all of the 50+ achievements.

    2022ActionStrategyIndieFreeSteam ↗
  6. Eden Rising

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Indie with Sentinel 4: Dark Star.

    Brace yourself for a brand new action-packed Open World. Explore a huge world to gather materials for gear and defenses. Use everything at your disposal to defend your bases and defeat hordes of hostile monsters. Play solo or up to 8-player online!

    2019ActionStrategyIndieFreeDeck PlayableSteam ↗
  7. Space Cheese Defenders

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Indie with Sentinel 4: Dark Star.

    A tower defense game with RTS elements about gathering cheese in space, where mobile carriers are able to deploy smaller spacecraft. Collect cheese to buy and upgrade spaceships and use each type to customize your playstyle and defend your base!

    2024StrategyIndieFree To PlayFreeSteam ↗
  8. Wander Vyrosa

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Strategy and Indie with Sentinel 4: Dark Star.

    A tower-defense game with roguelite elements on fully explorable mini planets! Travel the galaxy of Vyrosa, land on planets, and defend your drilling equipment while mining fuel to continue your journey throughout the galaxy!

    2023ActionStrategyIndieFreeDeck PlayableSteam ↗

Frequently asked about Sentinel 4: Dark Star

How much does Sentinel 4: Dark Star cost?
Sentinel 4: Dark Star is listed on Steam at 6.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Sentinel 4: Dark Star?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Sentinel 4: Dark Star are Sol Survivor, Anomaly Defenders, DG2: Defense Grid 2.
Who developed Sentinel 4: Dark Star?
Sentinel 4: Dark Star was developed by Origin8 Technologies Ltd.

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 4: Dark Star.

For library-aware picks tuned to your specific taste, sign in with Steam on the home page.

31 Games Like Sentinel 4: Dark Star — Ranked for 2026 · imho.run