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Cobalt Core News

Linux update!

[p]Hello! After running a native linux branch for a few days we've decided to go back to using proton on the main game build for now. Future work on a linux native build will continue in a proper experimental branch.[/p][p][/p][p]If you're interested in that, please hop into the discord channel! ❤️[/p]

Popular sci-fi roguelike deckbuilder Cobalt Core added Linux support

Rated Overwhelmingly Positive from users on Steam, the sci-fi roguelike deckbuilder Cobalt Core just added official Linux support.

Read the full article here: https://www.gamingonlinux.com/2025/08/popular-sci-fi-roguelike-deckbuilder-cobalt-core-added-linux-support/

1.2.5 hotfix

  • [p]made the Daily achievement progress trigger when your Daily run ENDS, instead of when it starts[/p]
  • [p]fixed a bug that was making the Daily achievement progress pop up on launch, instead of just when you make progress[/p]
  • [p]fixed a few miscellaneous bugs earlier this week too but I'm not gonna make separate patch notes about those[/p]

1.2.5

[h2]Content[/h2]
  • [p]daily artifacts you’ve seen are now listed at the bottom of the codex[/p]
  • [p]added Polish and Ukrainian glyphs to our font to support fan translations[/p]
  • [p]A whole bunch of bugfixes, listed below[/p]
  • [p]quietly added a Mac version (let us know in the discord if you try it!)[/p]
[h2]Bugfixes[/h2]
  • [p]you can no longer start the rail cannon fight lodged inside the wall[/p]
  • [p]Rebound Reagent can no longer proc multiple times in a single fight if you save+quit+reload[/p]
  • [p]Dillian on enemy-shufflin' dailies can no longer shuffle his extend action to BEFORE he attacks, which let him shoot you in ways you wouldn't see coming[/p]
  • [p]Combustion Engine doesn't render its actions weird when you have hermes boots[/p]
  • [p]the status Engine Lock is now correctly labeled as “affected by Timestop” while you have Timestop[/p]
  • [p]the Janitorbot and the Rail Cannon now obey RNG seeding properly and have consistent starting positions[/p]
  • [p]you can now peek your draw/discard/exhaust pile during another UI (think Admin Deploy B or EXE cards)[/p]
  • [p]choosing a card from your hand (Admin Deploy B) now shows the cards in the same order they are in your hand[/p]
  • [p]Second Opinions now draws cards in the order they are in your draw pile - if your Jupiter’s Moons is on top of the draw pile, it will be drawn first - might matter if your hand is almost full[/p]
  • [p]fixed Boss Advantage / Draft Pick daily run modifier timing issue[/p]
  • [p]fixed upgrade arrow color if Only B Upgrades daily run modifier is up[/p]
  • [p]the game now attempts to view non-English leaderboard names in their appropriate fonts if possible, and falls back to replacing unknown characters with `?` (they used to just be blank)[/p]
  • [p]long leaderboard names now get an ellipsis[/p]
  • [p]fixed daily run modifiers not being saved if the game is closed via the X button right after starting a run, but before getting to the first fight[/p]
  • [p]fixed card tooltips appearing for a single frame when they're disabled while playing on a controller[/p]
  • [p]some optimizations related to artifacts[/p]
  • [p]some miniscule RNG changes (RNG no longer called if choosing 1 out of 1 items)[/p]