This jam is now over. It ran from 2020-11-01 04:00:00 to 2020-12-07 04:59:59. View 65 entries


2400 is a lo-fi sci-fi RPG featuring starships with CRT monitors, mind-backups on cartridges that get wiped in magnetic storms, and medics hauling around spare-tire-quality cyber-limbs. But more than that, it's a plug-and-play toolkit, each module a microgame that can be printed out on a single page of paper. It's designed to be quick to learn and easy to hack. To facilitate that, it's now got a Creative Commons licensed system reference document (SRD) and layout template, 24XX. So please, by all means: hack away.


Make something for or from 2400. Offer your own interpretation of "lo-fi sci-fi" for use with these rules, or do something else cool with the system, like adventure locations, character options, a xeno-bestiary, or adapting for a new game or setting.

Price it (or not) as  you like. Check out this thread by Dee Pennyway if you want to charge for it and also set up free community copies.

Keep it inclusive. We reserve the right to remove entries for (intentional or unwitting) racism, misogyny, ableism, homophobia, or transphobia, and to update this list as needed to prevent gatekeeping against marginalized people.



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Lo-fi sci-fi micro RPG collection
A lo-fi sci-fi RPG SRD
Lo-Fi Hi-Fantasy RPG. Part of the 1400 plug-and-play micro-RPG series.
TTRPG about hunting demons in space derelicts
24XX hack about vampire hunting in a wasteland world of dark monsters
A 24XX hack based on anomalies and blessed powers
Role Playing
Washington Irving inspired microgame adapted from Jason Tocci's 24XX
Lo-Fi Space Vikings
lofi rpg in a city of scum and villainy
TTRPG where you're a starfighter in an increasingly messy war
A fluffy space raptor RPG
20th Century Cyberpunk
Samurai hunting cursed blades
Weird Cosmic Sci-fi RPG
a handy adventure guide for space goons in the year 24XX
Competitive Killing TTRPG
A lo-fi Cyberpunk setting inspired by Repomen and Repo!: A Genetic Opera
Body modification in a steampunk future (24XX)
24XX hack about saving the climate
Lo-Fi Hi-Fantasy RPG Dungeon Crawl. Part of the 1400 plug-and-play micro-RPG series.
Free Kriegsspiel roleplaying in a galaxy far, far away...
Cinematic Heist RPG
Play a team that retrieves dangerous books in this lo-fi surrealist 24xx TTRPG.
A 24XX hack where you bring about the end of the world.
Lo-fi rpgs inspired by TRON and Battlestar Galactica
A 24XX game about infiltrating a city that's been overrun with dinosaurs.
Pirates pursuing fugitives from Davy Jones Locker
Adventures in a wild world filled with spirits and weird magic.
Lo-Fi Sci-Fi Tactical Espionage RPG
Cyberpunk Sports miniature game. Get the ball, and avoid the traps and hack your way into the victory!
Rebuilding community in the distant past.
A Sci-Fi Time Loop RPG
Lo-Fi RPG about exploring the stars.
see you later space cowboy
24XX hack of nameless gunslingers caught between two gangs in an otherworldy Western setting
Corporate industrialpunk soulslike (24XX)
Fantastical airships
Post Apocalyptic Exploration
A 24XX game about going back in time to save the future
Adventures below the waves of a sunken earth.
The supernatural is real, and you are here to stop the monsters — an homage and goodbye to a 15-Season journey.
An entry for the 24XX game jam.
a Lo-Fi Food Service game based on 24XX
A super-condensed, lo-fi abstract RPG about planar revolutionaries fighting the system.
Outlaw picking jobs in the weird west
Horror-beauty in the vast darkness
Spirits left to wander far grow monstrous fair and old.
A 24XX RPG set within the oceans of a world in the wake of environmental disaster
Zone shepherds, nontraditional genders, weird biotech flocks.
A 24XX microgame about civil mechs and an imminent storm
24XX hack of exiled elves fighting against Santa’s enemies in lo-fi sci-fi
Play a vengeful goddess and end the world.
An unplaytested game for TRUE FANS everywhere
Gunrunners, rumrunners, flappers and jazz - the age of Prohibition and excess.
Bronze axes and minimal sorcery in New Kingdom Egypt.
Survivors forget ideologies post-apocalypse. 24XX-based.
A list of enemies and character backgrounds for 24XX games, especially Tempus Diducit because it's wild.
Simple lifepath approach for creating 2400 Cosmic Highways characters
A 24XX game about WW2 partisans