IMHO.

Single-player games like Thunder Kid II: Null Mission

Below are 15 single-player Steam games similar to Thunder Kid II: Null Mission, 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 Thunder Kid II: Null Mission page.

Ranked picks

  1. 1
    Thunder Kid — Steam game cover

    Thunder Kid

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action with Thunder Kid II: Null Mission.

    Take on the forces of the Robot Empire in this Low-Poly 3D Run 'n' Gun Action Game!

    2018Action3.19 USDDeck PlayableSingle-playerSimilar games →
  2. 2
    Escape from Terror City — Steam game cover

    Escape from Terror City

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    3D Run'n'Gun Arcade-Style Action! Fight the Mechanized Forces of the Argus Empire and Escape from Terror City!

    2021ActionIndie9.99 USDSingle-playerSimilar games →
  3. 3
    ARMED SEVEN — Steam game cover

    ARMED SEVEN

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    The year is 1989. 12 years have passed since the Gogoh Army’s invasion of Earth. Exposure to alien technology during the war enabled Earth’s own technologies to take massive leaps forward. International conflict that was previously rife in the history of mankind fell to an all-time low, and the Earth Federation was established as a...

    2015ActionIndie2.49 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    Intrusion 2 — Steam game cover

    Intrusion 2

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    "This is some of the most fun I've had with a game so far this year, and it will go down as one of the best side-scrolling shooters of all time." - 9/10, Destructoid

    2012ActionIndie9.99 USDSingle-playerSimilar games →
  5. 5
    GIGANTIC ARMY — Steam game cover

    GIGANTIC ARMY

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    Side-scrolling mech-shooting bad-assery is BACK!GIGANTIC ARMY is a heartfelt homage to 16-bit era mech shooters such as Cybernator / Assault Suits Valken, Metal Warriors, and Front Mission: Gun Hazard, developed by the studio behind the acclaimed shooter SATAZIUS.

    2014ActionIndie2.99 USDSingle-playerSimilar games →
  6. 6
    Duck Paradox — Steam game cover

    Duck Paradox

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    Shoot bouncing bullets in this roguelike precision platformer killing corrupted ducks while searching for Dr. Paraducks’ beloved pet throughout the multiverse! To return to safety you’ll need to tackle difficult-to-master trials, run after run, earning upgrades, while maintaining your sanity!

    2024ActionIndieAdventure9.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Ikaruga — Steam game cover

    Ikaruga

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    Shoot! Dodge! and... Get Hit!? "Ikaruga" is a vertical shoot 'em up that features an unique polarity-switching gameplay. Switch the ship's polarity and "get hit and absorb" enemy bullets! Achieve High Score with the chain bonus!

    2014ActionIndie9.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    LUFTRAUSERS — Steam game cover

    LUFTRAUSERS

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    The skies are aflame and the seas will overflow with wreckage in Vlambeer’s stylish arcade shooter LUFTRAUSERS! Take to the skies in customized fighter planes to battle battleships, submarines, and rival aces for glory, honor, and high scores.

    2014ActionIndieSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    And All Would Cry Beware! — Steam game cover

    And All Would Cry Beware!

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action with Thunder Kid II: Null Mission.

    90s-style shooter meets Metroidvania. Step through a portal to a mysterious alien world, and discover the fate of the Lost Expedition.

    2019ActionAdventure9.99 USDSingle-playerSimilar games →
  10. 10
    Venusian Vengeance — Steam game cover

    Venusian Vengeance

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    In the year is 196X the Soviets won the space race and colonized Venus. Now the Americans have sent Sgt. Jon Dagger to Venus to destroy the Secret Soviet Science Facility.

    2015ActionIndie3.99 USDSingle-playerSimilar games →
  11. 11
    Ninja Outbreak — Steam game cover

    Ninja Outbreak

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    Survive in an off-world research station that has been overrun by a contagion that turns its victims into bloodthirsty Ninja.

    2016ActionIndieAdventure9.99 USDSingle-playerSimilar games →
  12. 12
    Cold Vengeance — Steam game cover

    Cold Vengeance

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    When Canada invades the USA, Sgt. Jon Dagger must run and gun his way across the ruins of America to the Frozen North to deliver Cold Vengeance.

    2017ActionIndie9.99 USDSingle-playerSimilar games →
  13. 13
    Kill the Superweapon — Steam game cover

    Kill the Superweapon

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    3D Twin-Stick Action game where bosses can roam from room to room in pursuit of the player. Samantha Kill is on a mission to take down Abaddon Inc. and their Bio-Mechanical Supersoldiers.

    2018ActionIndie7.99 USDSingle-playerSimilar games →
  14. 14
    Space Captain McCallery - Episode 1: Crash Landing — Steam game cover

    Space Captain McCallery - Episode 1: Crash Landing

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    Space Pirate Captain McCallery has Crash Landed on an alien planet! Explore a strange and hostile alien world in this Low-Poly 3D Action-Adventure game.

    2018ActionIndieAdventureFreeDeck PlayableSingle-playerSimilar games →
  15. 15
    Space Captain McCallery - Episode 2: Pilgrims in Purple Moss — Steam game cover

    Space Captain McCallery - Episode 2: Pilgrims in Purple Moss

    Single-player alternative to Thunder Kid II: Null Mission — playable solo, no multiplayer required. Shares Action and Indie with Thunder Kid II: Null Mission.

    Space Pirate Captain McCallery explores a mysterious ruin in an alien swamp in search of treasure in this Low-Poly 3D Action-Adventure game.

    2019ActionIndieAdventure4.99 USDSingle-playerSimilar games →