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Heat Death — patch notes and updates

Stored observation / content update:

Dated developer announcements recorded from Steam. Open the source for the complete update.

UpdateDateExcerpt / source
You can now steal enemies! & more2025-12-25Merry christmas! When using "copycat" to steal an enemy's ability to summon more enemies, you can now summon those enemies to fight on your own side. There is a new 'bucket' reward at the start of fast mode. The bucket has 3 new cards, each of them summoning an enemy to fight for you. Additional improvements: - bonus damage should no longer affect friendly fire or self-damage. - damage modifiers should now affect "burning" debuffs, when applied using 'Wither'. - "Corentin+" should no longer prevent the healing you get at the end of boss fights. - The icon of the debuff applied by 'Dancer' has been changed, so that it won't be confused with bu
Improvements for "Skathi's Blessing" and "Hyperburner"2025-12-18Bugfix This patch fixes "Skathi's Blessing" not reducing the cost of cards created during combat. Improved interaction The tech "Hyperburner" makes satellites do double damage, but makes them self-destruct at the start of your turn. With this patch, satellites will no longer self-destruct before they have a chance to perform their action. For example, if they were created by another satellite, they used to immediately self-destruct and be useless. Now they will stick around until they have had the chance to do at least 1 action.
bugfixes2024-08-24- 'Myriad' and 'Mitosis' should now copy buffs and debuffs - Enemies which reduce their own firepower/shieldpower should now do so correctly - Tech that you already own should no longer appear as a reward - Adjustments have been made to card combination warnings
Bugfixes + some new art2024-08-13Fixes: - Fixed interactions with the tech 'Tinder' - Fixed 'Arsenal' not working if created during combat - Fixed 'Repairing Burst' not working if created during combat - (Hopefully) Fixed an issue where the achievement 'Nothing can harm me!' sometimes wouldn't unlock - Fixed some cards which required a target when they shouldn't. (jolly good card, firecracker) Also added new artworks for a few cards
Fix dwarf planet + AoE2024-06-16This patch fixes an issue where dwarf planets were not affected by AoE modifiers.
Difficulty unlocks pr planet2024-04-07- Difficulties now unlock per planet. - There is now a symbol which indicates which difficulty you most recently beat. - The description of the card 'Disregard' has been fixed. It should reduce costs by 1.
Difficulty unlocks2024-04-06This patch re-introduces difficulty unlocks, which I had forgotten to implement for the new character selection screen. - New players can choose between difficulty 0, 1 and 2 - To unlock new difficulties, simply beat the highest difficulty you have access to - If you would like to skip this progression, there's a checkbox for that in the 'cheats & challenges' menu.
Bugfix: Bladestorm2024-04-03Fixed 'Bladestorm'. The card should now last until the end of combat
Updated artwork, 'grand mystery' and 'superb mystery' buffed2024-03-22In this patch, I've added around 30 new artworks for cards, mostly focusing on the human planet. I've reduced the energy cost of the upgrades 'grand mystery' and 'superb mystery', because I think these cards still have relatively few synergies that are strong enough to justify the high energy cost. 'Grand mystery' will now also have the 'exhaust' keyword. There are a few synergies that are extremely strong, though, so I might reevaluate this later. Other miscellaneous changes: - The card 'Fix' is renamed to 'Grow'. - The borders on all cards are now thinner, and their glittery background is slightly darker - 'Malfunction' cards have a dimmer
Incremental improvements2024-02-19In this update: - Visual improvements in the long mode starmap - More updated card art - Withershield should now be affected by Mystery - Various status effects should now activate in the order that they were created. - fixed an issue where some status effects would not correctly expire
Map rework, fixes2024-02-09Today's patch is mainly focused on improving the map in 'long mode'. There's no gameplay changes here, only visual changes: - A new overhead view makes it so you no longer need to move the camera around. - Unimportant or irrelevant information has been de-emphasised. - (higher difficulties) It should now be clearer which nodes are consumed. Features: - The card 'Clot' now works with the 'double damage' and 'triple damage' upgrades Fixes: - The order in which buffs/debuffs apply was backwards. Should be left to right, not right to left. This has been fixed. (Relevant bug: The enemy 'Revenge' should now interact correctly with the "Total Obscur
New 'Time Attack' mode, small balance change, fixes2024-01-20New challenge - In the 'cheats & challenges' section, there is now a Time Attack mode. When this is turned on, your turn ends after 30 seconds. Balance changes - In fast mode, boss rewards now allow give a card remove instead of a card swap - In fast mode, changed the '+3 artillery' bonus to +4. Fixes - Fixed some bugs where some numbers were not calculated correctly. (affects Explosive Sigils with damage bonuses, and Mystery combined with Radioactivity, magnitude, sigils, ash, alacrity) - Fixed 'Quick Lashes' not combining/upgrading correctly.
fixes 18.jan.242024-01-18- Fixed a dialogue where you could choose to take 15 damage and obtain a tech, but no tech was given. - Fixed the achievement for victory unlocking even though you didn't win
A couple of changes + fixes2024-01-13Balance changes - Wish on a Raindrop and Mania will now only affect buffs, rather than all status effects. - The cards 'White Cell' and 'Drain' should now be affected by shieldpower, card modifiers and status effects. Other changes - The achievement 'A weapon feared even by stars' will now only count damage dealt to enemies, because dealing 200+ damage to allies is actually very easy. - Fast mode should now feature 4 bossfights Fixes - Fixed an issue where you would get achievement for beating a boss by exiting to the main menu. (Note to other unity developers: The 'OnDestroy callback is not the correct place to put this type of achievement u
Achievements!2024-01-12We're a real game now! 18 achievements have been added! More to come, probably...
New synergies, and some UX2024-01-07New synergies - % bonuses to damage/shield from status effects should now be affected by Mystery. Each point of mystery gives +10% bonus. - Elemental bonus damage (cards like Skathi, Rearrange, Burning Mastery) should now be affected by Mystery as well as damage bonuses. - 'Auto Pilot' is now affected by Mystery. - Mystery should now correctly affect the number of ticks you get from status effects. In total, 'Mystery' should now correctly affect 30 cards that previously might not have been. UI/UX - The UI for selecting cards from your deck to upgrade/combine/swap should now be quicker to use, by requiring 1 less click. - Improved the text whe
4 new cards & some fixes2024-01-06New cards - There are 4 new cards for Storm: 'Bladestorm', 'Bust', 'Autoboot', 'Hurl' Card changes: - The card 'CardCard', created by 'CardCardCard', will now draw a card and generate 15 shield instead of generating 20 shield. - Changed the cost of 'Torrent' from 1 to 0, and added 'Exhaust'. Mechanic change: - Fixed a bug where status effects would not expire when they should, for example Sever + Lain Fixes: - The card 'Sever', when inserted into a status effect, will now read "Repeat this effect" instead of "Replay this card". This text is more accurate to how the effect currently works.
Some buffs, improvements and fixes2024-01-01Improvements - Many of the low threat stars have been improved with better and/or clearer choices. - The card 'Copycat' now has the 'addictive' trait - Some old cards have new artwork (mash, morning, pyromania, detonate) - Added descriptions for fast mode and long mode. Bugfixes - Fixed clot causing a crash if it was stacked too many times. (Related: Max health and damage are now capped, to prevent arithmetic errors) - Fixed the interaction with Mystery for the card 'Roots'
Bugfixes + some nice things2023-12-28- Fixed an issue where 'fast mode' would not load. - Added the new card 'firecracker' for Ablaze - Improved the artwork of the cards "devastator" and "pollute" for Radioactive Also, I forgot to mention these in the previous patch. The following new tech have been added: - 'Burning warehouse', a tech for the Human planet, which destroys all cards named 'laser' or 'laser+' - 'Breakdown', a tech for Radioactive, which makes radioactivity decay more slowly
quick bugfix2023-12-26Fixed interaction between 'Clot' and 'Mystery': - Fixed the numbers on the card growing over time. - Fixed the health of the satellite not increasing by the same amount as the max health buff.
Heat Death Returns! New planet and game mode!2023-12-26Hey there, sorry it's been a while! Merry christmas! This patch comes with the new planet 'Sanguine'. A bit of a strange one, it is built around the idea of witchcraft and dark magic. The new 'Fast Mode' is designed with a simplified map and fewer combat encounters. Games are intended to last something like 20-30 minutes, or about half as long as the old game mode. There's also a number of balance/design changes: - Plasma damage has been removed, and replaced with Fire damage. This affects the cards 'Lacerate' and 'Plasma'. - Gluttony: The buff now affects 2 attacks instead of 1. Final Automaton: The energy cost is reduced from 2 to 1. The sa
small fix: Card draw on satellites2023-02-02Fixed an issue where satellites, at the end of the turn, could draw cards before the hand is discarded. This would make it so that the cards are discarded before you have a chance to play them.
some nice little changes2023-01-28Gameplay -Satellites will now always perform actions in left-to-right order, instead of the order in which the satellites were created. -There should no longer be a chance of being forced into a high threat level at the beginning of a cluster -Reduced the variance in what a high-threat combat can look like in the 1st cluster. UI -Added a preview of a satellite's spawn location when you are about to create a satellite using a card. -On the starmap, you can now see which stars are 'connected' by hovering the mouse over them. (1 known issue: It doesn't always show all connections, this will likely be fixed in the next patch) -Travelling to a clu
Infinite Mode, and a fun new cheat2022-12-29INFINITE MODE Infinite mode is now available. You can start an infinite run by clicking the "Infinite" button after you win a game. Here's how it works: -Every time you win, you will start over, keeping all your resources. -Enemies will get tougher. -You get less max health for winning fights. -Anything that happens in Infinite mode will not be recorded in your run history, for the time being. 'CHEATS' -A new cheat has been added, which allows you to find cards from ALL planets at the same time. Turning this 'on' will also give you the required tech to make magnitude and radioactivity work. For now, these tech will stay even if you turn the c
Lots of balance adjustments, 3 new tech2022-12-18NEW CONTENT -Added 3 new tech for Ablaze: "Hestia", "Tinder", and "Remnants". "Remnants" will be the new starter tech for Ablaze, replacing "Contrashock". ABOUT THIS PATCH My intention with this patch is to nudge many details in a better direction. Hopefully this will improve strategic diversity, and possibly even make new strategies possible. I've also decided to remove some cards that I thought were not interesting enough. Removed cards will still be in your deck if you picked them up on an older patch, but you can no longer find them in card rewards. NEUTRAL -Some of the less interesting/powerful Upgrades and Insertions have been buffed. -
Lots of more little details2022-12-12New Content -Added a new 'cheat' which changes all medium-threat fights into high-threat fights. Bugfixes -Fixed an issue where a card would not be saved/recreated correctly if it had been upgraded multiple times. (This was only an issue with cheats on) -Fixed Scout Tower not getting aoe-shields when upgraded with AoE. -Fixed the card "Copycat" having the wrong description for multiple attacks. -You can no longer play cards after the last enemy dies -Fixed 'crumble' having 2 different descriptions -Fixed 'Seeping Tub' not having a 'retain' tag. -Other minor bugfixes Player Balance -Reduced the energy cost of Pow to 2. -Removed the cards Trans
This patch lets you break the rules!2022-11-26What happens if you are allowed to combine and upgrade cards without limit? Or what if you have all the tech in the game? That's what today's patch is all about! This patch brings in a new menu of "Cheat" settings. This feature unlocks after you have won or lost a total of 10 games. Currently, the available cheats are: - Allow cards to be upgraded and combined an infinite amount of times, instead of just once. - Have all the tech in the game at the same time - Add +1 mystery to all cards - Reduce the size of your starter deck - Unlock all difficulty levels - Start the game with only 1 max health More cheats might be added in the future. For e
A lot of little things2022-11-20Lots of changes here, in all the areas that I think are most important right now. Enemy Encounters - Enemy selection is less random. The type of enemy that spawns will now depend on how many clusters you've visited. This should allow for more strategising when building your deck. I'll try to add more detailed information about this to the Encyclopaedia in the future. - Two new enemy types have been added. UI - The starmap, for low difficulties, no longer features 'consumed' nodes which limit movement. for these difficulties, the number of stars in a cluster has been slightly reduced. This is done in order to simplify the UI. - When hovering t
minor bugfixes,2022-10-15I'm looking into a bug which causes cards to occasionally become invisible for some users. I've not been able to reproduce the bug on my own computer, so it may be a hardware issue that requires some weird workarounds. This patch will hopefully fix the issue. There's also some bugfixes, for example "history" displaying in the wrong order. I've been a bit under the weather this week, so I've not been able to make any new content. My main focus moving forward is to finally improve the UI in the starmap. This might also involve changing some of the game's rules.
A few new cards, balance changes, minor UI improvements2022-10-09You can now view new cards in the Encyclopaedia. Open the encyclopaedia, go to "Search", and then check the "Only New" checkbox. This will narrow your search to show only cards that were added in this patch. There are also some minor improvements to text readability, and you can also adjust the font size in tooltips in the Options menu. There are many balance/mechanic changes, here are the key takeaways: - There are some minor changes to a variety of Human and Ablaze cards, mostly buffs. - Combustion caused by cold damage should now also be affected by card modifiers, in the same way as ordinary combusts. - The last boss will no longer apply