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
Steam
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
0
Original sources
1
Latest update
Latest updates
Update history
Browse past updates and patch notes for this game.
- March 2021
- Update for 3.6.2021Hi Guardians! We noticed a very specific instance where it was possible to crash the game, and were able to successfully patch that out. We also rebalanced the initial encounters, so the game's slow start isn't quite as…
- February 2021
- Update for 2.16.2021 -- Second Loop and Extra Life SpeedHi Guardians -- SO this update has a few things that it is changing: 1st -- Increased the difficulty once you loop past the final boss. Now instead of facing the same exact bosses, you will fight a remixed version in th…
- Update for 2.12.2021Identified a bug with the first boss that occurs if steam overlay was hit too many times in a row. Should be fixed now.
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%