Jupiter Hell Classic 0.6 "Callisto" upgrades Callisto and its branches, introduces the proper boss of Io, improves the UI, adds the Dante special level, and much, much more. Read the moloch of patch notes below!

First of all, thank you for such a warm reception of Jupiter Hell Classic!

This update would not be possible without the help of our excellent community on Discord (
https://discord.gg/jupiterhell ) - be sure to drop in if you want to help shape future content!

This is our first post-EA-launch content update, so we wanted to start with a banger. To make reading easier, we split the massive patch notes into sections. Enjoy!


The main focus of this release is Callisto. A brand-new branch has been added - Mimir. If you immediately thought CalSec Central, think again: the special level is completely different!

Alongside it come three new former human variants - the grenadier, the suicidal inmate, and the guard with an auto-rifle.

The main Callisto level generator (BSP, for those in the know) has been significantly improved, with benefits noticeable across other levels as well. Other Callisto generators and levels got minor improvements too, both in gameplay and visuals.


Speaking of gameplay, the former isn't the end of new stuff, far from it. Io finally has a proper boss fight, and Dante gains a new special level - Inferno - a brutal homage to a classic. Dante also has its own barrels now, so watch where you stand!

Couple of important gameplay changes are outlined above. You'll quickly notice the medusa will now be more interesting to fight. Also noticable is the important knockback change - knockback now applies after damage, ensuring explosions always deal their intended damage. Do note that you're not going to be as safe in those phaseshift boots either!

Two classic challenges also return: Angel of Confidence and Angel of Overconfidence, completing the initial set. Ao100? That's planned for later in the EA cycle as part of a full set of Trial game types.


End of new stuff? Nope! Grenades (four types!) are now in the game - perfect for clearing chaff or helping in restricted-weapon challenges. Multitools arrive too - currently repairing armor, with more uses to come. Swap times vary by weapon class now, and medkits/stimpacks stack in threes. The latter got a buff too, see below!


As promised we're commited to making the game more transparent mechanics wise and less wiki dependent - two big changes in that regard. First is the being info screen (the classic m for more), with detailed stats info on enemies. This will be improved more with status effects later, and a more detailed item information screen will be added too!

The latter is the introduction of the cover marker. Nothing has changed mechanics wise - it's the same old corner-shooting, but now much more accessible. If you see that green shield that means that the targeted enemy cannot shoot you! A gray shield is the same but from a visible non-targeted enemy. After more than 20 years corner-shooting advanced to a fully respected and acknowleged feature. *sniff* oh how fast they grow up :) *sniff*

We also have quickslot support for gamepad, animation (reverse death!) for raising dead enemies and improved visuals for the fullscreen overlays for status effects - in particular invulnerability should be much less obnoxious. If anyone has still issues with those, hit me up (preferably on Discord) - I can work out a toggle that removes all of those.

A couple smaller stuff can be noticed above not least new icons for better distinction!


This release is light on trait changes, mostly a few significant buffs (especially Son of a Gun) to improve pistol and melee experience. The one nerf is to Angry Mo-fo. The sleeper hit that once awoken was borderline broken :P. Next release will have more significant changes in this department.


But Traits aren't the only thing balanced - above is quite a big list of changes, and I'm pretty sure I missed some in this report. The most notable balance changes are the stimpack buff, the variable knockback and variable swap time changes, and a general increase in XP per floor (you'll level up faster!).


Finally what would a patch notes list be without a bugfixes list! This ones fairly short - we tried to push all important fixes in to the big list of Hotfixes that you've seen for the first few weeks after EA launch.

On the "other" front the tech-savvy might be interested we migrated from SDL2 to SDL3.


Finally - the demo is updated with all relevant changes above!

The DRL mod is also updated to the latest engine (no DRL specific changes at the moment):


Once again, thank you for such an awesome reception of JHC on Steam - it motivates us to make every update the best we can. We’re happy you chose to join this journey, and we promise many exciting updates along the way!

From here on, we'll aim for slightly lighter updates on a more frequent schedule. Next up: 0.7 "Europa" in about a month!

Until then, have fun with the game and let us know what you think - here on Steam or on Discord.

Sincerely,
ChaosForge

We've got two big bits of news to share today:

• Jupiter Hell Classic is now officially Steam Deck Verified - so if you wondered if you can take the roguelike carnage with you anywhere, the answer is right there!
  
• The first post-launch update, version 0.6, is coming out next week on Monday, September 29th. This will be our first major content update since Early Access release, and we can't wait for you to get your hands on it!

We'll leave the full change list for the announce post, but you can expect new Callisto enemies, a brand new Callisto branch (Mimir) with it's own special level, UI and mechanics transparency improvements, improved melee gameplay, grenades and multitools and Io finally getting a proper boss fight!

Callisto itself is also slowly getting a facelift!

(see that small green shield indicator? this is your ol' buddy Cornershooting, after more than 20 years maturing to Actual Cover!)

This is just the beginning. We'll continue shaping JHC closely with community feedback, so please keep sharing your thoughts on the Steam forums and Discord. Every bit of input helps us prioritize what comes next. As soon as 0.6 drops we'll update the Roadmap with the current plan!

If you're enjoying the game, don't forget to leave a review - it really helps visibility and keeps the momentum going. And as always, spreading the word to your friends and communities helps ensure we can keep building the best game possible!

Thanks again for all the support since launch - we're excited to deliver 0.6 to you next week!

Sincerely,
ChaosForge