Arrhenius (Out now on itch.io!)
@arrhenius.bsky.social
He/Him. Official Bluesky account for Arrhenius, the #ttrpg set 100,000 years in the future during the next Ice Age.
Available now! https://jesseharlin.itch.io/arrhenius
https://www.drivethrurpg.com/en/product/476741/arrhenius-an-icecore-roleplaying-game
Available now! https://jesseharlin.itch.io/arrhenius
https://www.drivethrurpg.com/en/product/476741/arrhenius-an-icecore-roleplaying-game
Pinned
ARRHENIUS by Dungeonteller
A Far-Future Ice Age TTRPG Set in the Year 100,000
jesseharlin.itch.io
New York’s hottest #ttrpg is Arrhenius. IT. HAS. EVERYTHING.
✅Exploding dice
✅Psychotropic eel poop
✅Feral AI
✅Human snowpants
(What’s “human snowpants”?)
It’s that thing of when a robot decides it isn’t human enough so it skins you and wears it out on the glaciers.
jesseharlin.itch.io/arrhenius
✅Exploding dice
✅Psychotropic eel poop
✅Feral AI
✅Human snowpants
(What’s “human snowpants”?)
It’s that thing of when a robot decides it isn’t human enough so it skins you and wears it out on the glaciers.
jesseharlin.itch.io/arrhenius
Another sale of #Arrhenius over on itch means another free Community Copy available for those who can’t afford it.
Grab it while it’s available!
jesseharlin.itch.io
Grab it while it’s available!
jesseharlin.itch.io
Dungeonteller
jesseharlin.itch.io
January 4, 2026 at 6:09 PM
Another sale of #Arrhenius over on itch means another free Community Copy available for those who can’t afford it.
Grab it while it’s available!
jesseharlin.itch.io
Grab it while it’s available!
jesseharlin.itch.io
One more year closer to the Age of #Arrhenius! Only… (checks math) 97,974 more years to go!
It’s right around the corner!
It’s right around the corner!
January 3, 2026 at 5:00 AM
One more year closer to the Age of #Arrhenius! Only… (checks math) 97,974 more years to go!
It’s right around the corner!
It’s right around the corner!
Reposted by Arrhenius (Out now on itch.io!)
Open up this picture fully.
Then look at the surface of Mars.
Then look up to the top right.
Spot Mars' moon Phobos high in the sky.
Then notice the bright spot beside Phobos.
That's Earth.
Then look at the surface of Mars.
Then look up to the top right.
Spot Mars' moon Phobos high in the sky.
Then notice the bright spot beside Phobos.
That's Earth.
December 30, 2025 at 9:30 PM
Open up this picture fully.
Then look at the surface of Mars.
Then look up to the top right.
Spot Mars' moon Phobos high in the sky.
Then notice the bright spot beside Phobos.
That's Earth.
Then look at the surface of Mars.
Then look up to the top right.
Spot Mars' moon Phobos high in the sky.
Then notice the bright spot beside Phobos.
That's Earth.
Reposted by Arrhenius (Out now on itch.io!)
Jim Wampler announced this morning that we lost Tim Kask, who passed in his sleep on the 30th.
Tim was the creator of The Dragon, which set the foundation for what an industry-focused magazine should be. He was an icon and one of the few early founders of TSR still with us.
Tim was the creator of The Dragon, which set the foundation for what an industry-focused magazine should be. He was an icon and one of the few early founders of TSR still with us.
December 31, 2025 at 2:39 PM
Jim Wampler announced this morning that we lost Tim Kask, who passed in his sleep on the 30th.
Tim was the creator of The Dragon, which set the foundation for what an industry-focused magazine should be. He was an icon and one of the few early founders of TSR still with us.
Tim was the creator of The Dragon, which set the foundation for what an industry-focused magazine should be. He was an icon and one of the few early founders of TSR still with us.
Reposted by Arrhenius (Out now on itch.io!)
Happy New Year ❤️ Think this was my most popular piece of 2025! Wishing you all a Left Pic Jessica kind of 2026
December 31, 2025 at 7:38 PM
Happy New Year ❤️ Think this was my most popular piece of 2025! Wishing you all a Left Pic Jessica kind of 2026
Reposted by Arrhenius (Out now on itch.io!)
"The Human's world ends soon," said the cat.
"Again?" said the dog.
"They are fond of endings and beginnings. Even if nothing changes."
The dog whined.
"Same procedure as last year?" said the cat.
"Please."
The cat lay on the dog's head and purred, muffling the fireworks.
#CrossRepost
"Again?" said the dog.
"They are fond of endings and beginnings. Even if nothing changes."
The dog whined.
"Same procedure as last year?" said the cat.
"Please."
The cat lay on the dog's head and purred, muffling the fireworks.
#CrossRepost
December 31, 2025 at 7:15 PM
"The Human's world ends soon," said the cat.
"Again?" said the dog.
"They are fond of endings and beginnings. Even if nothing changes."
The dog whined.
"Same procedure as last year?" said the cat.
"Please."
The cat lay on the dog's head and purred, muffling the fireworks.
#CrossRepost
"Again?" said the dog.
"They are fond of endings and beginnings. Even if nothing changes."
The dog whined.
"Same procedure as last year?" said the cat.
"Please."
The cat lay on the dog's head and purred, muffling the fireworks.
#CrossRepost
Reposted by Arrhenius (Out now on itch.io!)
words for the new year
December 31, 2025 at 7:41 PM
words for the new year
Reposted by Arrhenius (Out now on itch.io!)
the haunting of hill house
December 31, 2025 at 7:43 PM
the haunting of hill house
“What was your biggest impact on the Internet?”
Probably creating Mando’a for #StarWars Republic Commando. Karen Traviss expanded it greatly, but it started with my music for SWRC.
starwars.fandom.com/wiki/Mando%2...
youtu.be/iiNyQD5Yq3E
Probably creating Mando’a for #StarWars Republic Commando. Karen Traviss expanded it greatly, but it started with my music for SWRC.
starwars.fandom.com/wiki/Mando%2...
youtu.be/iiNyQD5Yq3E
December 31, 2025 at 7:46 PM
“What was your biggest impact on the Internet?”
Probably creating Mando’a for #StarWars Republic Commando. Karen Traviss expanded it greatly, but it started with my music for SWRC.
starwars.fandom.com/wiki/Mando%2...
youtu.be/iiNyQD5Yq3E
Probably creating Mando’a for #StarWars Republic Commando. Karen Traviss expanded it greatly, but it started with my music for SWRC.
starwars.fandom.com/wiki/Mando%2...
youtu.be/iiNyQD5Yq3E
Every time my kid asks for string cheese, I always sing:
"YOU'RE OWN....
"PERSONAL......
"CHEESES......"
And he has never once appreciated it.
DOOM Dooba DOO BAH Doom ba-Dahbah DAH BAHM
"YOU'RE OWN....
"PERSONAL......
"CHEESES......"
And he has never once appreciated it.
DOOM Dooba DOO BAH Doom ba-Dahbah DAH BAHM
December 31, 2025 at 3:27 AM
Every time my kid asks for string cheese, I always sing:
"YOU'RE OWN....
"PERSONAL......
"CHEESES......"
And he has never once appreciated it.
DOOM Dooba DOO BAH Doom ba-Dahbah DAH BAHM
"YOU'RE OWN....
"PERSONAL......
"CHEESES......"
And he has never once appreciated it.
DOOM Dooba DOO BAH Doom ba-Dahbah DAH BAHM
Look out, Genius Bar. I’m bringing you a mess………. 🍏
December 30, 2025 at 7:19 PM
Look out, Genius Bar. I’m bringing you a mess………. 🍏
Reposted by Arrhenius (Out now on itch.io!)
Comfort and joy?! Bah, humbug.
Tis the season for frozen mutants!
The #Arrhenius #ttrpg comes complete w/snow, ice, hypothermia, and a free Quick Start demo available for download RIGHT NOW.
Right now! Can you believe your luck?!
All you need to do is add the dice 🎲
jesseharlin.itch.io/arrhenius
Tis the season for frozen mutants!
The #Arrhenius #ttrpg comes complete w/snow, ice, hypothermia, and a free Quick Start demo available for download RIGHT NOW.
Right now! Can you believe your luck?!
All you need to do is add the dice 🎲
jesseharlin.itch.io/arrhenius
December 22, 2025 at 8:46 PM
Comfort and joy?! Bah, humbug.
Tis the season for frozen mutants!
The #Arrhenius #ttrpg comes complete w/snow, ice, hypothermia, and a free Quick Start demo available for download RIGHT NOW.
Right now! Can you believe your luck?!
All you need to do is add the dice 🎲
jesseharlin.itch.io/arrhenius
Tis the season for frozen mutants!
The #Arrhenius #ttrpg comes complete w/snow, ice, hypothermia, and a free Quick Start demo available for download RIGHT NOW.
Right now! Can you believe your luck?!
All you need to do is add the dice 🎲
jesseharlin.itch.io/arrhenius
Reposted by Arrhenius (Out now on itch.io!)
Reposted by Arrhenius (Out now on itch.io!)
Show me what you can do with just a pen! (and pencil 😁)
December 27, 2025 at 12:28 AM
Show me what you can do with just a pen! (and pencil 😁)
Reposted by Arrhenius (Out now on itch.io!)
December 18, 2025 at 12:48 AM
Reposted by Arrhenius (Out now on itch.io!)
Happy Filipino holidays! May all of you have a good day no matter where you are.
December 24, 2025 at 4:03 PM
Happy Filipino holidays! May all of you have a good day no matter where you are.
#Arrhenius: Come for the ice. Stay for the dice.
December 23, 2025 at 7:03 AM
#Arrhenius: Come for the ice. Stay for the dice.
Comfort and joy?! Bah, humbug.
Tis the season for frozen mutants!
The #Arrhenius #ttrpg comes complete w/snow, ice, hypothermia, and a free Quick Start demo available for download RIGHT NOW.
Right now! Can you believe your luck?!
All you need to do is add the dice 🎲
jesseharlin.itch.io/arrhenius
Tis the season for frozen mutants!
The #Arrhenius #ttrpg comes complete w/snow, ice, hypothermia, and a free Quick Start demo available for download RIGHT NOW.
Right now! Can you believe your luck?!
All you need to do is add the dice 🎲
jesseharlin.itch.io/arrhenius
December 22, 2025 at 8:46 PM
Comfort and joy?! Bah, humbug.
Tis the season for frozen mutants!
The #Arrhenius #ttrpg comes complete w/snow, ice, hypothermia, and a free Quick Start demo available for download RIGHT NOW.
Right now! Can you believe your luck?!
All you need to do is add the dice 🎲
jesseharlin.itch.io/arrhenius
Tis the season for frozen mutants!
The #Arrhenius #ttrpg comes complete w/snow, ice, hypothermia, and a free Quick Start demo available for download RIGHT NOW.
Right now! Can you believe your luck?!
All you need to do is add the dice 🎲
jesseharlin.itch.io/arrhenius
YOU GUYS. IT HAPPENED.
Someone mentioned #Arrhenius on Reddit and:
1. it wasn’t me.
2. it wasn’t someone I know who playtested the game.
I am slowly—but apparently surely—getting the word out about this game.
It’s a Christmas miracle.
Someone mentioned #Arrhenius on Reddit and:
1. it wasn’t me.
2. it wasn’t someone I know who playtested the game.
I am slowly—but apparently surely—getting the word out about this game.
It’s a Christmas miracle.
December 21, 2025 at 5:44 PM
YOU GUYS. IT HAPPENED.
Someone mentioned #Arrhenius on Reddit and:
1. it wasn’t me.
2. it wasn’t someone I know who playtested the game.
I am slowly—but apparently surely—getting the word out about this game.
It’s a Christmas miracle.
Someone mentioned #Arrhenius on Reddit and:
1. it wasn’t me.
2. it wasn’t someone I know who playtested the game.
I am slowly—but apparently surely—getting the word out about this game.
It’s a Christmas miracle.
Or to be a big tardigrade walking across the spine of the world!
December 18, 2025 at 8:11 AM
Or to be a big tardigrade walking across the spine of the world!
@ennie-awards.bsky.social Hey, Ennies. Do you know that your website hasn’t been accepting submissions for the last few days due to a “critical error” on both mobile and desktop platforms?
December 18, 2025 at 5:29 AM
@ennie-awards.bsky.social Hey, Ennies. Do you know that your website hasn’t been accepting submissions for the last few days due to a “critical error” on both mobile and desktop platforms?
December 18, 2025 at 12:48 AM
Reposted by Arrhenius (Out now on itch.io!)
Reminder that I released ARRHENIUS, Vol. 1 The White Above) this year.
It’s the first companion EP to #Arrhenius, the #indie #ttrpg I released in May.
open.spotify.com/album/1y6d8K...
It’s the first companion EP to #Arrhenius, the #indie #ttrpg I released in May.
open.spotify.com/album/1y6d8K...
ARRHENIUS, Vol. 1 The White Above (Original Game Score)
open.spotify.com
December 17, 2025 at 6:36 AM
Reminder that I released ARRHENIUS, Vol. 1 The White Above) this year.
It’s the first companion EP to #Arrhenius, the #indie #ttrpg I released in May.
open.spotify.com/album/1y6d8K...
It’s the first companion EP to #Arrhenius, the #indie #ttrpg I released in May.
open.spotify.com/album/1y6d8K...
ARRHENIUS, Vol. 1 The White Above (Original Game Score)
open.spotify.com
December 17, 2025 at 6:36 AM
Oh yeah! Annual reminder time. You can watch #Muppet Christmas Carol with the emotional lynchpin song "The Love Is Gone" replaced back into the middle of the movie under the Extras menu on Disney+'s entry for the film.
I learned this tip this year! If you have Disney+, the uncut full version of the movie is in the Extras menu for the Muppet Christmas Carol page. I watched it this year with the song back in and it was SO much better.
December 17, 2025 at 5:42 AM
Oh yeah! Annual reminder time. You can watch #Muppet Christmas Carol with the emotional lynchpin song "The Love Is Gone" replaced back into the middle of the movie under the Extras menu on Disney+'s entry for the film.