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Atomic Guardians

Also known as Atomic Guardians, ag, atomic guardians

ATOMIC GUARDIANS is a fully CO-OP arcade retro shoot 'em up, where one player flies the ship, and the other player mans the shields. Fight your way through a never ending horde of Brutal Bosses, Alien Monsters and Gigantic Asteroids as you rack up a new world-wide high score. Play with up to three friends, and see how long you can last!

Last update
19 May 2026
Players now
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Original sources
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Latest update
Announcement

Quick Update

Hi Guardians! Small internal Quality of life update -- adds a discoloration to the turret when it can't fire, so it's more obvious when it is able to fire again. Thanks! Mosh Jason

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Latest updates

Update history

Browse past updates and patch notes for this game.

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Gallery

In-game media

Achievements

Community progression

Top picks from 20 Steam achievements, sorted by player unlock rates.

  • The First of ManyBeat The Red Mothership21.1%
  • David Vs GoliathDefeat the Star Dreadnought15.3%
  • If You Can Dodge an Asteroid...Defeat the PMD13.4%
  • The Quick And The DeadDefeat the 5th Boss11.5%
  • Eye Spy...Totally defeat the Hellmother... Both forms!11.5%
  • Trench RunnerSurvive The Space Station's Trench9.6%