1.2.9
Fixed a missing character in the Traditional Chinese translation
Fixed a missing character in the Traditional Chinese translation
Cobalt Core
Rocket Rat Games · Brace Yourself Games
- Released
- Nov 8, 2023
- Platforms
- Last updated
Updates & announcements
- Developer postOriginal post
- Developer post
1.2.8
Fixed a bug that was unlocking some achievements at the wrong time
Original postFixed a bug that was unlocking some achievements at the wrong time
- Developer post
1.2.7
Fixed a bug that made Ricochet Paddle and Payback not interact correctly (Payback was turning the missile around visually, but those missiles were REALLY bloodthirsty and still fired at the player anyway).
Original postFixed a bug that made Ricochet Paddle and Payback not interact correctly (Payback was turning the missile around visually, but those missiles were REALLY bloodthirsty and still fired at the player anyway).
- Developer post
1.2.6
Fixed a bug that prevented daily runs from ever seeing a few ? events. Fixed a really niche softlock that prevented you from leaving the "view card" screen in certain scenarios.
Original postFixed a bug that prevented daily runs from ever seeing a few ? events.
Fixed a really niche softlock that prevented you from leaving the "view card" screen in certain scenarios.
- Developer post
small patch
minor additional mod support that's it, it's small
Original postminor additional mod support
that's it, it's small
- Developer post
Linux update!
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. If you're interested in that, please hop into the discord channel!
Original postHello! 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.
If you're interested in that, please hop into the discord channel! ❤️
- GamingOnLinux
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:
Original postRated 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/
- Developer post
1.2.5 hotfix
made the Daily achievement progress trigger when your Daily run ENDS, instead of when it starts fixed a bug that was making the Daily achievement progress pop up on launch, instead of just when you make progress fixed a few miscellaneous bugs earlier this week too but I'm not gon
Original postmade the Daily achievement progress trigger when your Daily run ENDS, instead of when it starts
fixed a bug that was making the Daily achievement progress pop up on launch, instead of just when you make progress
fixed a few miscellaneous bugs earlier this week too but I'm not gonna make separate patch notes about those
- Developer post
1.2.5
Content daily artifacts you’ve seen are now listed at the bottom of the codex added Polish and Ukrainian glyphs to our font to support fan translations A whole bunch of bugfixes, listed below quietly added a Mac version (let us know in the discord if you try it!) Bugfixes you can
Original postContent
daily artifacts you’ve seen are now listed at the bottom of the codex
added Polish and Ukrainian glyphs to our font to support fan translations
A whole bunch of bugfixes, listed below
quietly added a Mac version (let us know in the discord if you try it!)
Bugfixes
you can no longer start the rail cannon fight lodged inside the wall
Rebound Reagent can no longer proc multiple times in a single fight if you save+quit+reload
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
Combustion Engine doesn't render its actions weird when you have hermes boots
the status Engine Lock is now correctly labeled as “affected by Timestop” while you have Timestop
the Janitorbot and the Rail Cannon now obey RNG seeding properly and have consistent starting positions
you can now peek your draw/discard/exhaust pile during another UI (think Admin Deploy B or EXE cards)
choosing a card from your hand (Admin Deploy B) now shows the cards in the same order they are in your hand
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
fixed Boss Advantage / Draft Pick daily run modifier timing issue
fixed upgrade arrow color if Only B Upgrades daily run modifier is up
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)
long leaderboard names now get an ellipsis
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
fixed card tooltips appearing for a single frame when they're disabled while playing on a controller
some optimizations related to artifacts
some miniscule RNG changes (RNG no longer called if choosing 1 out of 1 items)
Developer postVinyl soundtrack campaign!
We're doing a vinyl soundtrack campaign!!! Also, we're 25% off right now for the Turn Based Carnival steam event!
Original postWe're doing a vinyl soundtrack campaign!!!
Also, we're 25% off right now for the Turn Based Carnival steam event!
- Developer post
1.2.4
Nerfed Rail Cannon slightly. It no longer shoots a heavy missile on turn 1, and its Phase 1 attacks are now 2 damage, instead of 1x2 multihits Fixed a bug in which you could get the same Zone 2 elite fight twice in certain rare situations
Original post- Nerfed Rail Cannon slightly. It no longer shoots a heavy missile on turn 1, and its Phase 1 attacks are now 2 damage, instead of 1x2 multihits
- Fixed a bug in which you could get the same Zone 2 elite fight twice in certain rare situations
- Developer post
1.2.3
Re-added the Just One Character daily modifier to the daily pool A few small bug fixes (including the bugs associated with the Just One Character artifact that made us remove it to begin with!)
Original post- Re-added the Just One Character daily modifier to the daily pool
- A few small bug fixes (including the bugs associated with the Just One Character artifact that made us remove it to begin with!)
- Developer post
Patch notes- 1.2.1
Temporarily removed the "just one character" daily modifier, as a few bugs have been found with it that'll take a little bit to fix. We'll have it back in the rotation in a week or two. This does mean that today's daily seed has been rerolled and today's daily leaderboards have b
Original post- Temporarily removed the "just one character" daily modifier, as a few bugs have been found with it that'll take a little bit to fix. We'll have it back in the rotation in a week or two.
This does mean that today's daily seed has been rerolled and today's daily leaderboards have been refreshed. Sorry about that!
Developer postPatch notes: 1.2.0
CONTENT: Added a daily mode! Everyone playing that day’s daily share a crew, a ship, and a run seed. They also share 1-3 weird modifiers that make daily runs feel pretty different from normal runs! Dailies are scored! Compete with your friends on the Steam leaderboards! Daily run
Original postCONTENT:
- Added a daily mode!
- Everyone playing that day’s daily share a crew, a ship, and a run seed. They also share 1-3 weird modifiers that make daily runs feel pretty different from normal runs!
- Dailies are scored! Compete with your friends on the Steam leaderboards!
- Daily runs are available after beating the game, OR by opting in early (and accepting that dailies may contain story/mechanic spoilers!)
- Here’s a few examples of daily modifiers:
- One character only!
- Enemy ship parts are randomly shuffled at the start of every fight!
- Start with extra health, but most fights take place in Solar Flare events- you’re gonna need the health
- Cards can only be upgraded to their B upgrade
- Start with a free boss artifact
MISC:
- Ship health bars now have slightly darker ticklines every 5th tick, to make it easier to tell at a glance how much health an enemy has
- Made the card “Release” a dual card- you can now choose if the object you’re releasing is pointed TOWARD or AWAY from you
BUGFIXES:
- Made it so getting the status “LOSE ALL YOUR EVADE NEXT TURN” plays a sad sound instead of a happy one
- Fixed some other really minor stuff that’s too boring to list
Lastly, we're doing a Makeship campaign for a Riggs plushie!!!
Look at her. Incredible. I want one.
This campaign only goes until September 18th, so grab one while you can!!!- Developer post
Patch notes: 1.1.2
PLAYER SHIP CHANGES Ares starts with 1 less hull and 1 less max shield (now 8/4) Tiderunner starts with 1 less hull (now 7/3) Jupiter starts with 2 more hull and 1 more max shield (now 12/4) ENEMY CHANGES Wizbo / The Tower can no longer be in a Solar Flare environment if you ente
Original postPLAYER SHIP CHANGES
- Ares starts with 1 less hull and 1 less max shield (now 8/4)
- Tiderunner starts with 1 less hull (now 7/3)
- Jupiter starts with 2 more hull and 1 more max shield (now 12/4)
ENEMY CHANGES
- Wizbo / The Tower can no longer be in a Solar Flare environment if you entered the fight with 3 or less hull 🧙♂️ 🔥
- Janitorbot / CST-7 "Minesweeper" has 2 less hull and 2 less shield
- Rider / The Solar Sail has 2 less shield
- X.05 / Rail Cannon puts out a little bit less damage in phases 2 and 3
BUG FIXES / MISC
- Added a second backup save system just for people whose computers crashed mid-save. Now, if your save is corrupted, you can revert to the backup made every time you return to the New Run screen
- Fixed a visual oddity where gaining lots of Max Shard would make the status row harder to read
- X.05 / Rail Cannon now gains 99 Perfect Shield when scrunching and loses it all when unscrunching, instead of 1. This fixes a strange interaction where it would retain its Perfect Shield into the next turn if it tried changing fight phases mid-turn (via taking damage from space mines, payback, heat, etc)
- A few miscellaneous bugfixes
Eagle-eyed players might notice we pushed a few of these changes a few days ago (specifically, the player ship modifications) without an official announcement. We were testing them out! Reception was positive and the changes seem to have done exactly what we were hoping they'd do, so they're staying. :)
- Developer post
Patch notes: 1.1.1
(Lumping the last two hotfixes into this update!) BALANCE CHANGES Solar Sail: one missile intent has been swapped from heavy missiles to normal missiles Rail Cannon: All phases now have 10hp instead of 11 Rail Cannon: All multi-hit attacks now cap at 1x2 instead of 1x3 Minesweepe
Original post(Lumping the last two hotfixes into this update!)
BALANCE CHANGES
- Solar Sail: one missile intent has been swapped from heavy missiles to normal missiles
- Rail Cannon: All phases now have 10hp instead of 11
- Rail Cannon: All multi-hit attacks now cap at 1x2 instead of 1x3
- Minesweeper: on Hardest, gained +3 hull, +3 shields, but is no longer armored (now +2/+2 compared to normal)
- Replicator: Main cannon starts with +1 damage and can go up to 5 max damage (instead of 4)
- reworked the card Quantum Quarry's upgrades:
- Quantum Quarry A now also retains
- Quantum Quarry B has been completely reworked; it instead gives +1 max shard
Developer postVersion 1.1- more enemies!
CONTENT Six new enemies: 3 new normal enemies, one per zone! One new elite for zone 2 A new alternate Zone 1 boss A new alternate Zone 2 boss Duncan the skunk, pilot of the Mining Drill, has been upgraded from NORMAL to ELITE enemy. That’s because he kills players more often than
Original postCONTENT
- Six new enemies:
- 3 new normal enemies, one per zone!
- One new elite for zone 2
- A new alternate Zone 1 boss
- A new alternate Zone 2 boss
- Duncan the skunk, pilot of the Mining Drill, has been upgraded from NORMAL to ELITE enemy.
- That’s because he kills players more often than any other non-boss fight! Watch out for this guy!
- One new common artifact: Chaff Emitters
BUGFIXES
- Fixed a graphical bug in the Hardest version of the big crystal fight
- A few smaller fixes on really weird, niche edge cases
MISC
- Renamed a status from “DRAW LESS NEXT TURN” to “SHAKEN”
- New splash art by Justin Chan! Look at it!!!
- Updated credits
NOTES
In the interest of keeping the game’s initial learning curve the same, all the new enemies can only show up after you’ve played or won a few runs. Pre-existing save files that have already done this will already have access to the new enemies!
- Six new enemies:
- Developer post
Patch notes: 1.0.7
1.0.7 changes Gameplay The card Escape Artist has been reworked and buffed a bit; it no longer discards any cards from your hand Art Tooth now has a talking animation Misc Fixed a longstanding bug that made the Soggins event incorrectly count as 5 unique events in the event progr
Original post1.0.7 changes
Gameplay
- The card Escape Artist has been reworked and buffed a bit; it no longer discards any cards from your hand
Art
- Tooth now has a talking animation
Misc
- Fixed a longstanding bug that made the Soggins event incorrectly count as 5 unique events in the event progress bar (whoops!)
- several dozen small bugs have been fixed
- the main change: big under-the-hood changes to how enemies work, which should be completely unnoticeable to the average player
- these changes are the last ones we needed to make for some very cool upcoming content later this summer 😎
If you were in the middle of a fight when your save file was transferred to 1.0.7, the enemy you were fighting might behave a little oddly! Once you start a new fight, everything should be back to normal 👍
- Rock, Paper, Shotgun
Join us for February's Game Club liveblog on Cobalt Core this Thursday
Hello folks. With the end of February fast approaching, here's a reminder that we'll be diving into our reader liveblog discussion for February's RPS Game Club pick, Cobalt Core , this coming Thursday, February 29th, at 4pm GMT (which is 8am PT / 11am ET for our American friends)
Original postHello folks. With the end of February fast approaching, here's a reminder that we'll be diving into our reader liveblog discussion for February's RPS Game Club pick, Cobalt Core, this coming Thursday, February 29th, at 4pm GMT (which is 8am PT / 11am ET for our American friends). Looking forward to seeing you there!
- Rock, Paper, Shotgun
This Cobalt Core mod adds hapless frog Soggins to your crew for extra chaos
If you've been enjoying the excellent Cobalt Core as part of this month's RPS Game Club , you may well have stumbled into Soggins the frog along your travels. Running into this hapless buffoon is always a delight in Cobalt Core, as he's one of the few special characters who doesn
Original postIf you've been enjoying the excellent Cobalt Core as part of this month's RPS Game Club, you may well have stumbled into Soggins the frog along your travels. Running into this hapless buffoon is always a delight in Cobalt Core, as he's one of the few special characters who doesn't instantly attack you on sight. Rather, the task here is always to try and save him from his own idiocy - namely, his malfunctioning ship that keeps firing his missiles right back toward him. He's an ungrateful little sod if you do rescue him from certain doom, but I kinda love him for it anyway - and thanks to an industrious pair of modders, you can now have Soggins join your crew to inflict his own special brand of personal chaos on you.