IMHO.

Single-player games like GundeadliGne

Below are 12 single-player Steam games similar to GundeadliGne, 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 GundeadliGne page.

Ranked picks

  1. 1
    Gundemonium Recollection — Steam game cover

    Gundemonium Recollection

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action and Indie with GundeadliGne.

    First of the three titles in the Gundemonium Collection, this pixel-style side-scroller brings the intensity of the 'bullet hell' shooter genre to Steam. Choose one of two playable characters, including an unlockable third character! Modify character weaponry to your liking!

    2011ActionIndieSingle-playerSimilar games →
  2. 2
    Hitogata Happa — Steam game cover

    Hitogata Happa

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action and Indie with GundeadliGne.

    Shoot 'em up with the 3rd game in the Gundemonium Collection series.

    2011ActionIndieSingle-playerSimilar games →
  3. 3
    Space Dragons — Steam game cover

    Space Dragons

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action and Indie with GundeadliGne.

    Choose your spaceship and defeat the alien threat that comes from the Moon. Blast your way crushing, ripping apart and exploding hostile aliens that are taking control of powerful weapons and military technology from Earth. Find the entity that controls the threat and make it explode into blood.

    2025ActionIndieAdventure9.99 USDSingle-playerSimilar games →
  4. 4
    Deathsmiles — Steam game cover

    Deathsmiles

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action and Indie with GundeadliGne.

    Deathsmiles is CAVE's bullet-hell shoot-'em-up where you take the role of one of five Angels to defend the magical land of Gilverado from an invasion by Hell itself! Eradicate this devilish assault!

    2016ActionIndie19.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    Mushihimesama — Steam game cover

    Mushihimesama

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action with GundeadliGne.

    Battle huge "Koju" bugs in CAVE's beautiful fantasy shooter, Mushihimesama. Experience the thrill of bullet hell from the masters of the genre as you evade visually stunning shot patterns with thousands of bullets.

    2015Action19.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Gun Wings — Steam game cover

    Gun Wings

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action and Indie with GundeadliGne.

    A mysterious meteorite from deep space was detected approaching the Solar System, before the meteorite is due to hit the Earth, three of the girls who had their bodies modified as weapons are sent, along with all the hopes of humanity, to destroy the meteorite and save mankind...

    2015ActionIndieCasual3.99 USDSingle-playerSimilar games →
  7. 7
    Assault Android Cactus+ — Steam game cover

    Assault Android Cactus+

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action and Indie with GundeadliGne.

    Assault Android Cactus is an intense arcade style twin stick shooter - pick from one of nine unique synthetic heroines and blast your way through overwhelming robots hordes to save the ship from its own workforce. Supports single player and local co-op game modes.

    2015ActionIndie19.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Wings Of Bluestar — Steam game cover

    Wings Of Bluestar

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action and Indie with GundeadliGne.

    This is an arcade horizontal shoot'em up, that combines solid arcade controls with modern elements like bullet hell phases, tiny hitboxes, different types of gameplay and scoring, collectibles, trophies and many other features, which makes Wings Of Bluestar a fun shmup for both casuals and regulars.

    2020ActionIndie7.99 USDSingle-playerSimilar games →
  9. 9
    Radiant Silvergun — Steam game cover

    Radiant Silvergun

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action with GundeadliGne.

    Set on the earth and in space on July 14, 2520 A.D., the film explores the mystery of mankind's extinction. Various terrains become battlefields. Enemies attack from all directions. There are 23 bosses in total. Aim for a high score by making full use of score bonuses and level-up weapons!

    2023Action19.99 USDSingle-playerSimilar games →
  10. 10
    RAIN Project - a touhou fangame — Steam game cover

    RAIN Project - a touhou fangame

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action and Indie with GundeadliGne.

    RAIN Project is a Touhou fangame re-imagined as a platforming boss-bash! After a ritual gone wrong, the newbie shrine maiden Sanae awakes in a world of fantasy. With only the storms to guide her, Sanae sets off to scale a towering mountain in search of answers.

    2018ActionIndieAdventure7.99 USDSingle-playerSimilar games →
  11. 11
    Project T — Steam game cover

    Project T

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action with GundeadliGne.

    It’s with a heavy heart that we announce that Project T has been canceled. We want to thank you for your support throughout this journey.

    ActionSingle-playerSimilar games →
  12. 12
    Bunny Must Die! Chelsea and the 7 Devils — Steam game cover

    Bunny Must Die! Chelsea and the 7 Devils

    Single-player alternative to GundeadliGne — playable solo, no multiplayer required. Shares Action and Indie with GundeadliGne.

    From the creator of the Gundemonium Collection comes a thrilling new 2D action-platformer! Help Bunny escape the Devils’ Labyrinth and defeat the 7 Devils in this hilariously over-the-top action-platformer game. Battle through a large, connected map filled with unique enemies, traps, and puzzles.

    2013ActionIndieAdventureSingle-playerSimilar games →