Diesel Empires

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Friday, March 20, 2026

GAMESTORM 26 FIRST DAY

IT'S THE FIRST DAY (for me). Gods I hope I do not mess up and reveal that I have been a hack GM the whole time.

Upcoming Games

Latest Rules (v33.x)

Released: February 21, 2026

I really, really like this version. Card recovery now requires resources; Long Rests are more useful and consequential; resources feel like they are more integrated into the narrative and make more sense with the mechanics; fewer cards need to be played; the game actually feels dangerous, and putting down cards from your hand IS consequential. I'm also getting a good feel for how to deal with successes, which is giving me a lot more tools to scale the tension of the game.

GameStorm 26
Fri • Mar 20 • 2:00pm

The Fae Incursion of Iylor Forest

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21-1721 EAST IYLOR. The King has paid your company to travel into Iylor Forest to scout a Fae Incursion. You know that this is just political theater, but the gold is real, and Iylor is still dangerous, filled with bigger threats than the Fae, especially if they have captured the ire of the King...

GameStorm 26
Fri • Mar 20 • 7:00pm

The Kings Mart versus The Elven Revolution

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22-1990 NEW CURXAON. Something big is happening in the city, but you and your crew are safe at the Kings Mart, selling magic stims to office burnouts. There's no way that later, you'll have to help keep the most important elf of the 22nd Era from bleeding out during a firefight. No. F--kin'. Way.

GameStorm 26
Sat • Mar 21 • 9:00am

Super: The F Team Versus The Apocalypse

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22-2015 THE VEIL. Every Fae cult on the planet is trying to rip open The Veil, and the strength of every Ascendant military and Chartered Super is barely holding back the Apocalypse. You've been freed from a White Room prison with the promise of amnesty and gold, IF you survive Saving the World.

GameStorm 26
Sat • Mar 21 • 2:00pm

The SouTau R77: 10 Tons of Guns

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CE-2243 SOUTAU. Eden Basin is about 10 days out via the R77 in the Deep Faelands. It's supposed to be a ghost town, but they want delivery of 60,000,000G in guns, armor, and magic. It's enough to start a war, or to end it, but pay is enough to keep you and the crew from asking too many questions.

GameStorm 26
Sat • Mar 21 • 7:00pm

Retrograde Orbits: Moonshot Mercy Mission

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CE-2244 CARR ESSE. Your crew doesn't usually take planet-side missions, but this one pays nice and fits in your schedule. It's a moonshot pickup and delivery of an AGI to some farmers hitched to the ankle of a Fae. Drop-off isn't actually near a Fae, but nothing ever goes smoothly in the Faelands.

GameStorm 26
Sun • Mar 22 • 10:00am

The Solstice of Second Chances

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22-1992 NORTHPOINT. Sparks FLY when your immortal boss and their elven ex accidentally cross paths during the morning rush. Amidst the frenzy of the Winter Solstice and Ash'olk's Pilgrimage, you and your crew of baristas are going to make sure your favorite boss gets a Second Chance at True Love.

Questions?

Feel free to email me at jlee@uptoolategames.com

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Rulesets

v33.x

Released: February 21, 2026

I really, really like this version. Card recovery now requires resources; Long Rests are more useful and consequential; resources feel like they are more integrated into the narrative and make more sense with the mechanics; fewer cards need to be played; the game actually feels dangerous, and putting down cards from your hand IS consequential. I'm also getting a good feel for how to deal with successes, which is giving me a lot more tools to scale the tension of the game.

v32.0.0 (ZipCon 2026)

Released: January 15, 2026

The short-lived but bright version 32! I only ran this for a single private convention and it has the most important changes to Diesel Empires to date, codifying how Successes and Success Pools work, and getting rid of the extra bloat of weapon damage and an armor system that I never felt really fit the system. I kept around weapons and armor rules because it felt right to my Rifts and GURPS heart.

v31.0.0 (Kumoricon 2025)

Released: October 31, 2025

New rules set! A lot of it is to make it more narrative and make it easier for GM's to structure games. Also, just for Kumoricon, I have Paths for Cowboy Bebop and Trigun! UPDATE (November 2, 2025): Added the updated Middle-Age Magic Girls playbook.

v30.0.0

Released: February 25, 2025

Everything I loved about v29.4.4 with an addition that I saw players attempting to do several times, and I liked the concept: Core Traits don't automatically start at one, but during a Check, you add one Core Trait with one Background Trait to get your starting draw. I think it makes the Core Traits more powerful, and makes how the players use their characters more unique (I hope).

v29.4.4

Released: January 10, 2025

So far v29.x is a winner! At least for my style of play. Still some things I need to fix about weapon damage and key traits. I like where v29.4.4 is going though...

v29.4.3

Released: November 27, 2024

This version adds in some refinements to v29.4.1 and changes up some of the terms to make more sense. What happened to v29.4.2? Maybe I'll tell y'all about it when you get older...

v29.4.1

Released: October 18, 2024

Oh boy I am SUPER excited for these rules! Let's see how they do in real games now...

I'm also experimenting with the player handouts so I can drastically reduce how much paper I use.

v29.4.0

Released: October 12, 2024

These rules premiered at a private con and oh boy did I have fun! I have this sinking suspicion that this might be approaching the final form for the game. v29 has been my most favorite version.

v29.3.2

Released: August 23, 2024

This is the ruleset that I will be bringing to the 2024 Rose City Comic Con. There won't be any "Bad Night" games, but I added the playbook since they were part of playtesting.

v29.3.1

Released: July 29, 2024

This was for a one shot called "Bad Night in Bonethorne Port". Experimented with a new combat system and a new way to approach checks.

v29.2.0

Released: March 3, 2024

v29.1.0

Released: January 11, 2024

This still uses the v29.0.0 core sheets.

v0.0.1 (Turn of the Card Edition)

Released: May 5, 2022

This one is a remix for another game I produced with my good friend Paul Abeyta. It can be found at TurnoftheCard.com.

v24.2.0

Released: January 28, 2022

v1.4.0 (First Edition)

Released: February 16, 2020