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Kornel Kisielewicz

@epyoncf.bsky.social
3.6K followers 135 following 352 posts

Professional roguelike and engine programmer. Indiepocalypse survivor. Founder of ChaosForge. Author of Jupiter Hell, DoomRL, DiabloRL and AliensRL!

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Kornel Kisielewicz @epyoncf.bsky.social · 09/09/2026
The hero we didn't know we needed, the hero we deserved. Mod of the year definitely goes to IKEA :P youtu.be/0tBlFZsMuO8?...
youtu.be
KALLAX STORAGEBORN, a free creation for The Elder Scrolls V: Skyrim™ from IKEA.
YouTube video by IKEA UK
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Kornel Kisielewicz @epyoncf.bsky.social · 08/09/2026
So many non-programming people will now learn that you shouldn't take that "almost finished" game jam prototype and try to make a finished game out of it.
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Kornel Kisielewicz @epyoncf.bsky.social · 06/09/2026
If AI ever truly "solves" software engineering, it will have solved most non-physical jobs first. Cheering for coders to get replaced is a bit like cheering for the iceberg because you dislike the people standing at the bow.
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Kornel Kisielewicz @epyoncf.bsky.social · 05/09/2026
If the teased StarCraft game at BlizzCon turns out to be a mobile game, that will be the final nail in the "legendary Blizzard" coffin, and final confirmation that they lost all contact with their audience.
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Kornel Kisielewicz @epyoncf.bsky.social · 28/08/2026
"But you have the "Traditonal Roguelike" tag on steam, so stop whining!" Well... (hint: only one of these is)
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Kornel Kisielewicz @epyoncf.bsky.social · 28/08/2026
So, are we at the life-as-a-service stage yet?
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Kornel Kisielewicz @epyoncf.bsky.social · 27/08/2026
I heard Ubisoft is remastering Heroes III? I found a leaked screenshot.
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Kornel Kisielewicz @epyoncf.bsky.social · 24/08/2026
Jupiter Hell Classic 0.13 "Medic" is out! New Medic class with 5 Master/5 regular traits, Exalted enemies, seeded games, UI/UX improvements, balance changes and more! Repost, share and check it out the linked patch notes! Yes, we're getting close to 1.0 :) store.steampowered.com/news/app/312...
store.steampowered.com
Jupiter Hell Classic - Steam News Hub
Updates, events, and news from the developers of Jupiter Hell Classic.
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Kornel Kisielewicz @epyoncf.bsky.social · 11/08/2026
I've managed to beat Larn ( via larn.org ) on my first attempt... of course difficulty 0. But still, this is one of the few roguelikes I've beaten. I regret never having tried it earlier - it has a lot of interesting ideas that would have shaped my roguelike career!
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Reposted by Kornel Kisielewicz
Quasimorph, 1.0.4 is OUT! @quasimorph.bsky.social · 31/07/2026
Greetings, mercenaries! Quasimorph has officially left Early Access and launched in version 1.0. For the next two weeks the game will be available at a 33% discount. Thank you to everyone who stayed with us throughout Early Access. Good hunting, mercenaries. #roguelike #turnbased
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Kornel Kisielewicz @epyoncf.bsky.social · 30/07/2026
Thanks for hosting, fellow sci-fi demon hunters ;) Jupiter Hell Classic, the successor to DoomRL and sidekick of Jupiter Hell just recently had a big content patch and is also slowly crawling to 1.0! bsky.app/profile/did:...
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Quasimorph, 1.0.4 is OUT! @quasimorph.bsky.social · 30/07/2026
We're honored to be this week's official #TurnBasedThursday host! #gamedevs #indiedev share your #turnbased games below, and use the hashtag! Like what you see? Don't forget to ❤️/🔁 and feel free to @ other devs!
#TurnBasedThursday
Show us what you got
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Kornel Kisielewicz @epyoncf.bsky.social · 27/07/2026
Jupiter Hell Classic 0.12 "CRI"... err, "BLEP!" is OUT! 7 new special levels! New 2-specials-per-moon layout! CRI branch & 4 new CRI enemies! Red keycards & Sector reports! Blood for the blood god! Click for cat pics or changelog: store.steampowered.com/news/app/312...
store.steampowered.com
Jupiter Hell Classic - Steam News Hub
Updates, events, and news from the developers of Jupiter Hell Classic.
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Kornel Kisielewicz @epyoncf.bsky.social · 07/07/2026
The day idTech died :'(
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Kornel Kisielewicz @epyoncf.bsky.social · 04/07/2026
I think I'll add a hidden medal to JHC and DRL - RTFM - for winning while never moving diagonally.
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Best Indie Games @clemmygames.bsky.social · 28/06/2026
Classic rogue-LIKE fans, this indie developer made a turn based title with permadeath, procedural levels and pure 90s sci-fi carnage, from the developer of DRL (f.k.a DoomRL) It's called Jupiter Hell Classic, and it's 20% OFF for the Steam Summer Sale!
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Kornel Kisielewicz @epyoncf.bsky.social · 21/06/2026
Each time I finally feel autonomous AI codegen gets a W on my codebases, a few days later a basic significant oversight is revealed that I would never have done building the code myself.
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Kornel Kisielewicz @epyoncf.bsky.social · 19/06/2026
Farewell Bobby Prince, your music will be with me for the rest of my life. Thank you!
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Kornel Kisielewicz @epyoncf.bsky.social · 12/06/2026
Fun fact: Moria predates Rogue. But not THAT Moria. The 1970s PLATO Moria was a first-person dungeon crawler (proto-blobber?) with RANDOM LEVELS. The Moria that became Umoria->Angband was a later Rogue-inspired roguelike. This is why programmers say naming things is hard.
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Kornel Kisielewicz @epyoncf.bsky.social · 11/06/2026
I always find it funny when someone who's never heard of USENET tries to explain the origin of the word "roguelike" to me.
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Kornel Kisielewicz @epyoncf.bsky.social · 11/06/2026
All those "one shot game X in Fable" people don't seem to realize why game jam games can be completed in 2 days, but then the commercial version of said game can take 2 years.
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Kornel Kisielewicz @epyoncf.bsky.social · 03/06/2026
JUPITER HELL DOUBLE RELEASE! Jupiter Hell 1.9 "Heavy" is out, new Heavy class, new traits, perk upgrades, buffs and more! store.steampowered.com/news/app/811... Jupiter Hell Classic 0.11 "Terminal" is out too, with the Warden, bots, terminals and Hacking! store.steampowered.com/news/app/312...
store.steampowered.com
Jupiter Hell - Steam News Hub
Updates, events, and news from the developers of Jupiter Hell.
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Kornel Kisielewicz @epyoncf.bsky.social · 03/06/2026
JUPITER HELL DOUBLE RELEASE! Jupiter Hell 1.9 "Heavy" is out, new Heavy class, new traits, perk upgrades, buffs and more! store.steampowered.com/news/app/811... Jupiter Hell Classic 0.11 "Terminal" is out too, with the Warden, bots, terminals and Hacking! store.steampowered.com/news/app/312...
store.steampowered.com
Jupiter Hell - Steam News Hub
Updates, events, and news from the developers of Jupiter Hell.
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Reposted by Kornel Kisielewicz
Die in the Dungeon @dieinthedungeon.bsky.social · 28/05/2026
It's finally time, we're hosting #TurnBasedThursday this week❗ DEVS 👉 Share your turn-based game here! PLAYERS 👉 See all the coolest turn-based games below! 🔁 + ❤️ to reach more players, and don't forget to use the hashtag! 🐸
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Kornel Kisielewicz @epyoncf.bsky.social · 30/04/2026
Tired of that stupid tech drone not behaving the way you want it in Jupiter Hell Classic and wish it behaved more like the JH version? Well guess what...
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Reposted by Kornel Kisielewicz
Joseph Hewitt @gearheadrpg.com · 23/04/2026
All hands to battle stations, this is not a drill! It's the official #TurnBasedThursday on Bsky! Calling all #GameDev aces: tell us about your #IndieGame; post your project below! Tag your friends! Tag your enemies! ❤️ Players, share the love and help spread the word about your favorite games! 🔁
Turn Based Thursday: Show us what you've got!
The picture is of a red mecha standing against a mountainous background
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Kornel Kisielewicz @epyoncf.bsky.social · 03/04/2026
And how do *you* spend you yearly half-a-mil $ in tokens?
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Kornel Kisielewicz @epyoncf.bsky.social · 30/03/2026
Jupiter Hell Classic 0.10 "Heavy" is out! First brand new class arrives with 5 brand new Master traits and 6 new regular ones! Also in - Guardians, Archwarlocks, unique, exotic, perk and relic buffs, spool-up, and a new particle engine! Read all about it: store.steampowered.com/news/app/312...
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Kornel Kisielewicz @epyoncf.bsky.social · 01/04/2026
Following the successful psyop of bringing *that* DRL roguelike game to Steam via the guise of Jupiter Hell Classic workshop mod, we're now focusing on bringing you *that other* DRL roguelike game via mod to a new project called Mephisto. Stay tuned!
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Kornel Kisielewicz @epyoncf.bsky.social · 30/03/2026
Jupiter Hell Classic 0.10 "Heavy" is out! First brand new class arrives with 5 brand new Master traits and 6 new regular ones! Also in - Guardians, Archwarlocks, unique, exotic, perk and relic buffs, spool-up, and a new particle engine! Read all about it: store.steampowered.com/news/app/312...
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Jan Willem Nijman @jwaaaap.com · 26/03/2026
Another year, another 🐐GOTY OF THE YOTY🐐: jwaaaap.substack.com/p/goty-of-th...
jwaaaap.substack.com
GOTY OF THE YOTY 2025
some of my favorite media of 2025
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Kornel Kisielewicz @epyoncf.bsky.social · 21/03/2026
Game development is hard. Some days everything falls apart and you're barely holding on. Other days, though, you receive fan-mail and its all worth it in the end!
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Kornel Kisielewicz @epyoncf.bsky.social · 18/03/2026
Have you tried Jupiter Hell Classic, 0.9 Melee update?
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Kornel Kisielewicz @epyoncf.bsky.social · 05/03/2026
Thanks for hosting! Jupiter Hell Classic is the "unfollowup" to Jupiter Hell and remake of DoomRL, the OG traditional roguelike turn-based shooter. We're in Early Access with a dynamic community and monthly updates! store.steampowered.com/app/3126530/...
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Ichigoichie Games says wishlist Tactichord! @ichigoichiegames.bsky.social · 05/03/2026
We are honored to be this week's official #TurnBasedThursday host on Bsky! 🖥️Are you an #IndieDev? Reply with your stellar turn-based game! 🎸Are you a turn-based game fan? Then 💬comment, ❤️like and 🔁share all the great games inside this thread! Don't forget to add the hashtag & tag other devs!
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Kornel Kisielewicz @epyoncf.bsky.social · 24/02/2026
Finished Half-Life 1. Indeed a masterpiece of its time. I especially love the environments/level design and environmental storytelling. While people point out that Deus Ex was released afterwards, I do have to point out that Dark Forces and Jedi Knight were released before!
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Kornel Kisielewicz @epyoncf.bsky.social · 19/02/2026
Gave me a chuckle.
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Kornel Kisielewicz @epyoncf.bsky.social · 18/02/2026
I will have to retract my fairly positive opinion about Claude and agentic code tools in general. While they do work fairly competently with the DRL mixed FreePascal/Lua codebase, against the much larger C++/Lua codebase of Jupiter Hell they're proving barely worthwhile...
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Kornel Kisielewicz @epyoncf.bsky.social · 17/02/2026
Still on a break from my Elder Scrolls full playthrough, I took upon myself to fix the cardinal sin of never having played Half-Life. Started OG Half-Life 1...
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Kornel Kisielewicz @epyoncf.bsky.social · 17/02/2026
To mark Polish National Cat Day, here's a classic case of artist vs cardboard art :)
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Kornel Kisielewicz @epyoncf.bsky.social · 16/02/2026
Jupiter Hell Classic 0.9 "Melee" is out! New melee traits + Masters for Scouts/Techs, improved melee FX, Relics equipment slot, UI/UX upgrades, grenade + weapon tweaks, mod drop rate buff, toxic medusas, and Shattered Abyss! store.steampowered.com/news/app/312...
store.steampowered.com
Jupiter Hell Classic - Jupiter Hell Classic 0.9 - Melee! - Steam News
Melee rework, Shattered Abyss, toximedas, relics as equipment and more!
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Kornel Kisielewicz @epyoncf.bsky.social · 06/02/2026
The only thing growing exponentially in genAI is energy consumption and the volume of executive bullshit ahead of the next funding round.
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Char @alphachar.bsky.social · 05/02/2026
I am so honoured to officially host this week's #TurnBasedThursday on Bluesky! 🗣 INDIE DEVS! Show off your turn-based games in this thread with the hashtag! PLAYERS! Come on in & 💬comment, ❤️like, 🔁repost & ✨wishlist all the great games in the thread!
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Kornel Kisielewicz @epyoncf.bsky.social · 24/12/2025
Just on time for Christmas Eve I've defeated Hircine and finished Morrowind in my quest to complete the Elder Scrolls. I'll take a breather and later head to Oblivion! Merry Christmas 🎄 :D
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Kornel Kisielewicz @epyoncf.bsky.social · 22/12/2025
Jupiter Hell Classic 0.8 "Arsenal" is out now! Item perks, ADV gear with random perks, powerful Relics, clearer UI, reworked status timing, assembly cleanup, balance tweaks, and a new difficulty curve! #traditional #roguelike store.steampowered.com/news/app/312...
store.steampowered.com
Jupiter Hell Classic - Jupiter Hell Classic 0.8 - Arsenal! - Steam News
ADV items, Relics, UI improvements, mechanical transparency and more!
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Kornel Kisielewicz @epyoncf.bsky.social · 21/12/2025
Elder Scrolls full playthrough status report - finished Tribunal, heading for Bloodmoon!
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Kornel Kisielewicz @epyoncf.bsky.social · 16/12/2025
We promised more mechanical transparency, and we're delivering - even in the most esoteric of places! #JupiterHellClassic
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Kornel Kisielewicz @epyoncf.bsky.social · 25/11/2025
Vibe coding basically gives the effect of a client constantly requesting new requirements to a project without allocating refactoring time.
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Kornel Kisielewicz @epyoncf.bsky.social · 25/11/2025
The Jupiter Hell Classic equivalent of a chess puzzle: What do you do to save the loot? Does it change depending on class/traits? :P
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Kornel Kisielewicz @epyoncf.bsky.social · 22/11/2025
As a few of you know I'm on a quest to finish the entirety of the main Elder Scrolls series - Morrowind has been completed, the Tribunal expansion is next!
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