IMHO.

Games like Dark Old Sun

If Dark Old Sun is your kind of game, the closest matches are INSPACE 2980, Syder Arcade and Beat Invaders — picked from the ranked list below. Reviewers single out its atmospheric, challenging and mysterious. 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 Dark Old Sun: A shoot'em up, with focus on choice and progressiveness, so you can choose between a wide selection of weapons, and upgrade them becoming way more powerfull as you play.Big multi-phase bosses and a dramatic story.

2018ActionFree to playDeck PlayableWindows · macOS · Linuxby SN!Somos Nerds
Dark Old Sun — Steam game cover
Players highlight
360 degree aiming feels fresh for the genreBoss patterns require tactical focus and memorizationBrazilian dev team delivers polished free contentAtmosphericChallengingMysterious

Players who liked Dark Old Sun also play

Steam players who put hours into Dark Old Sun 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. INSPACE 2980

    WHY THIS

    Top pick for Dark Old Sun fans by collaborative filtering across millions of Steam libraries. Shares Action with Dark Old Sun.

    INSPACE 2980 is a stylish and dynamic SHMUP from the 16-bit era of games consoles and arcade machines. Take part in an exciting adventure and save the galaxy! Once again!

    2018ActionIndieAdventure2.99 USDSteam ↗
  2. Syder Arcade

    WHY THIS

    Shares survival mode and an atmospheric mood with Dark Old Sun.

    Second-strongest match for Dark Old Sun fans by collaborative filtering across millions of Steam libraries. Shares Action with Dark Old Sun.

    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 ↗
  3. Beat Invaders

    WHY THIS

    Shares an atmospheric mood with Dark Old Sun.

    Third-strongest match for Dark Old Sun fans by collaborative filtering across millions of Steam libraries. Shares Action with Dark Old Sun.

    Beat Invaders is a Vertical Shoot 'Em Up Roguelite - Fight your way through enemy fleets, unlock skills, items, ships, and upgrade them in the next run. Enjoy the smooth neon visuals matching the pushing EDM soundtrack - The perfect game to unwind.

    2022ActionCasual9.99 USDDeck VerifiedSteam ↗
  4. Earthion

    WHY THIS

    Shares twin stick shooting and an atmospheric mood with Dark Old Sun.

    Ranked #4 for Dark Old Sun fans by collaborative filtering across millions of Steam libraries. Shares Action with Dark Old Sun.

    Earthion is a side-scrolling space shooter developed natively for 16-bit systems. Guide space fighter pilot Azusa Takanashi in her fight to repel the alien invaders and save planet Earth.

    2025Action19.99 USDDeck VerifiedSteam ↗
  5. Galacide

    WHY THIS

    Ranked #5 for Dark Old Sun fans by collaborative filtering across millions of Steam libraries. Shares Action with Dark Old Sun.

    Command destructive spaceships to obliterate hordes of enemy vessels, while quickly solving puzzles to weave through networks of vibrantly colorful, adversarial machines!

    2015ActionIndie9.99 USDSteam ↗
  6. Star Saviors

    WHY THIS

    Shares a challenging mood with Dark Old Sun.

    Ranked #6 for Dark Old Sun fans by collaborative filtering across millions of Steam libraries. Shares Action with Dark Old Sun.

    Saviors brings the best bullet hell experience you can find on Steam. Play through 18 challenging stages in this ultimate test of tactics and reflexes.

    2016ActionStrategyIndie1.99 USDDeck PlayableSteam ↗
  7. Super Galaxy Squadron EX Turbo

    WHY THIS

    Shares a retro mood with Dark Old Sun.

    Ranked #7 for Dark Old Sun fans by collaborative filtering across millions of Steam libraries. Shares Action with Dark Old Sun.

    Super Galaxy Squadron is a fast-paced vertical shooter designed for human beings as well as SHMUP veterans. Featuring multiple game modes, a challenging but merciful difficulty curve, forgiving health system, and SEVENTEEN playable ships.

    2015ActionIndie9.99 USDDeck VerifiedSteam ↗
  8. Bit Blaster XL

    WHY THIS

    Shares a retro mood with Dark Old Sun.

    Ranked #8 for Dark Old Sun fans by collaborative filtering across millions of Steam libraries. Shares Action with Dark Old Sun.

    Bit Blaster XL is a fast-paced, retro arcade shoot 'em up (shmup) inspired by the classic quarter-munchers of the ‘80s. Easy to pick up, hard to put down, boost, dodge, shoot, and chase high scores in this addictive, old-school action game!

    2016ActionIndieCasual0.99 USDDeck VerifiedSteam ↗

Plays great on Steam Deck

Valve-Verified or Playable picks from the similar pool — ready to go on Deck out of the box.

  1. Beat Invaders

    WHY THIS

    Shares an atmospheric mood with Dark Old Sun.

    Deck Verified — runs on Steam Deck out of the box. Shares Action with Dark Old Sun.

    Beat Invaders is a Vertical Shoot 'Em Up Roguelite - Fight your way through enemy fleets, unlock skills, items, ships, and upgrade them in the next run. Enjoy the smooth neon visuals matching the pushing EDM soundtrack - The perfect game to unwind.

    2022ActionCasual9.99 USDDeck VerifiedSteam ↗
  2. Earthion

    WHY THIS

    Shares twin stick shooting and an atmospheric mood with Dark Old Sun.

    Deck Verified — runs on Steam Deck out of the box. Shares Action with Dark Old Sun.

    Earthion is a side-scrolling space shooter developed natively for 16-bit systems. Guide space fighter pilot Azusa Takanashi in her fight to repel the alien invaders and save planet Earth.

    2025Action19.99 USDDeck VerifiedSteam ↗
  3. Super Galaxy Squadron EX Turbo

    WHY THIS

    Shares a retro mood with Dark Old Sun.

    Deck Verified — runs on Steam Deck out of the box. Shares Action with Dark Old Sun.

    Super Galaxy Squadron is a fast-paced vertical shooter designed for human beings as well as SHMUP veterans. Featuring multiple game modes, a challenging but merciful difficulty curve, forgiving health system, and SEVENTEEN playable ships.

    2015ActionIndie9.99 USDDeck VerifiedSteam ↗
  4. Bit Blaster XL

    WHY THIS

    Shares a retro mood with Dark Old Sun.

    Deck Verified — runs on Steam Deck out of the box. Shares Action with Dark Old Sun.

    Bit Blaster XL is a fast-paced, retro arcade shoot 'em up (shmup) inspired by the classic quarter-munchers of the ‘80s. Easy to pick up, hard to put down, boost, dodge, shoot, and chase high scores in this addictive, old-school action game!

    2016ActionIndieCasual0.99 USDDeck VerifiedSteam ↗

Frequently asked about Dark Old Sun

Does Dark Old Sun run on Steam Deck?
Dark Old Sun is rated Playable on Steam Deck — it runs, but expect some manual adjustments (control remapping, text size, or graphics settings) for the best experience.
Is Dark Old Sun free to play?
Yes — Dark Old Sun is a free-to-play title on Steam. You can install and play it without buying anything, though some games include optional in-app purchases.
What games are most similar to Dark Old Sun?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Dark Old Sun are INSPACE 2980, Syder Arcade, Beat Invaders.
Who developed Dark Old Sun?
Dark Old Sun was developed by SN!Somos Nerds.

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 Dark Old Sun.

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12 Games Like Dark Old Sun — Ranked for 2026 · imho.run