No Lime Light Productions

Date 5/8/2025 UPDATE: We’ve expanded the book’s appendix with random tables designed to enhance storytelling for GMs. If it didn’t catch your interest before, we hope this update does.

Date 5/26/2025 UPDATE: We’ve added body transference mechanics and a selection of transfer shells, giving you even more ways to shape your experience. Jump in and check it out! 

Update Incoming!
As of July 6, 2025, we’re hard at work integrating a martial arts system into Prosperon’s hand-to-hand combat mechanics.
Currently, unarmed attacks deal a base damage of 2 (Which is not currently in the corerulebook so thats still unofficial) . Once this system goes live, damage will increase to:

• 3 damage for first-level martial art Diversity Tag training
• 4 damage for second-level Diversity Tag mastery
• The Good thing about using a diversity tag to take this cool combat skill is you get some cool passive bonues and you don’t have to worry about losing your weapon, because you are the weapon. True, weapons generally  do more damage though.

July 8th 2025 Update:  It’s official—we’ve wrapped up the hand-to-hand combat rules and specializations!

July 30th 2025 Update: It’s a wrap on the latest case files: The Osiris Agency. Dive deeper into this enigmatic organization and the threat it poses to Vanguard Inscribers who don’t play by the rules. Enough syntax bleeds, and you might just find yourself staring down an Osiris A.R.M.A. kill team—or worse.

This latest update adds a whole new layer to the game. We’re closing in on final layout, and Prosperon’s core book is nearly complete

Thanks for sticking with us through the slower rollout—between full-time work and overtime, updates haven’t been as frequent, but we’re pouring every spare moment into refining this world. Your support means everything, and we hope you enjoy what’s new!

To Follow our Dev Log on Itch io Visit https://nolimelightproductions.itch.io/prosperon-cyberpunk-setting/devlog Stay informed on all things Prosperon! Here, you’ll find the latest updates on lore expansions, layout refinements, and polished editions with grammar corrections. Plus, we’ll keep you posted on the official release of the physical book for print—so you won’t miss a thing.

Update August 2nd, 2025: The game is coming together beautifully, with Debra finalizing the layout and updates available on our website, newsletter, and itch.io. We’ve added a new Weakness & Advantage system—letting players take an advantage and a weakness—to deepen gameplay without adding to much complexity. Though we keep refining things, it’s all to ensure a rich experience packed with mechanics, lore, GM tools, and now detailed bookmarks for easy navigation. Thanks so much to everyone who’s supported us—feel free to share the game with someone who might love it too!

Update September 15th,2025: We’ve added two brand-new supplements to the roster. One is The Return of the Tzyntharian, a free add-on included with your purchase of the game. The other is Welcome to Arco Prime, a $1.50 micro expansion that introduces additional locations to enrich your world.

Update Septermber 20th, 2025: We’re happy to report that we’ve begun work on the illustrations for the bestiary section of the Prosperon Core Rulebook. We’ve also updated the core rulebook map and incorporated it into the current edition, along with layout improvements and other updates. We hope you enjoy them! Were trying to make sure we keep our promise to make sure that we bring you the game you deserve. We are a two person team, just my wife and I. This book started as early access project months ago and it’s only grown since then. We will not stop until the we’ve brought this project to a close, and as a thank you we’ve provided our first micro supplement for free with your purchase of the game called Return of The Tzyntharian.

Update October 6th 2025: We’ve just wrapped up the mega-corporations section, so now you’ve got a bit more lore and insight into the major players operating within Arco Prime. I’m also working on a micro supplement that’ll feature additional major and minor corps—so keep an eye out for that. We hope you’re enjoying the updates. The book’s really starting to take shape. And of course, my wonderful wife will be back on the art when she’s able as she works so much, but we’re getting there. Thank you to everyone who’s stuck with us this far. We appreciate you all. Wishing you a blessed day on this fine morning

Update Octorber 8th 2025: We’ve just implemented the lightweight hacking system, which uses the same core rolling mechanics as other skills—with a few subtle but important differences. We’ve also added a curated hack list that players can earn through milestones or loot, depending on their GM. We hope you enjoy the new changes!

Update October 18th 2025: With this latest update, we’ve made minor balance adjustments to several weapons and introduced flanking mechanics for those who prefer grid-based play. These flanking rules are also compatible with theater-of-the-mind gameplay, which remains the original and intended way to experience the game. We hope you enjoy the new and improved game. The Prosperon System is designed to be more narrative-driven, but it’s also semi-modular—meaning we offer optional rules and mechanics that can be disregarded entirely to create a more lightweight experience.

Update October 26th 2025: We’ve listened to feedback from many of you game owners, and we’re excited to announce a few updates! There’s now an updated How to Create a Character section, along with a new optional points-based leveling system called the EDGE POINT System, which you can use instead of the Milestone system.

We’ve also added several new non-lethal and utility items to the Equipment and Weapons section—so we hope you enjoy the changes!
The update will go live within the hour (assuming this storm doesn’t knock out our internet). Have a blessed day, everyone!

Update November, 8th, 2025: newly enhanced Synometry abilities have been added to the core rulebook. We hope you enjoy the more potent powers and hidden knowledge they bring to your synometric arsenal. We’ve also added a new entry into the bestiary and we’ve done a bit of layout work to spruce up the design of the book.

Update Novemeber, 16th, 2025 An updated version of this title is now available. During playtesting, we realized the Nexus combat rules needed additional refinement, so we developed a set of basic rules for combat within the Nexus Net. We also created a unique hack list that can be utilized in the Nexus.

UPDATE January, 17th, 2026 The Bestiary is nearly complete! We have one more beasty to add and it will be complete. Next my wonderful wife will be moving on to weapons, bio and cyberware artwork, along with some other illustrations for other sections of the book. Below is some of her handy work, we hope you enjoy the illustration of this Molterix

Update January, 19th, 2026 We’ve added more detail to the movement and flanking rules. We also added some examples of gameplay rolls so you get a better understanding on how rolls work in game.

Update January, 21st, 2026 We’ve added all diversity skill tags, advantages, and weaknesses into a fully alphabetized list, making it easier to skim and customize without searching through every background.

Update January, 27th, 2026  Great news! We have another update going live tonight. This release includes a simple yet effective item pricing guide, a full exhaustion system for sleep deprivation, and a new Syntax Bleed table. We hope you enjoy the updates, and we’ll continue refining balance and editing as playtesting reveals more issues. At this point, the game is definitely in a fully playable state

Update January, 31st, 2026 Enjoy the new Essential Glossary! That is all.

Update February, 2nd, 2026 We made some layout adjustments to the layout section making it a bit more comprehensive and we went into greater detail with the combat and initiative section of the rules give you a better Idea of how initiative works on the GMs side. 

Update February, 20th, 2026 We’ve updated the book with a new optional damage mechanic that lets players choose between static damage or rolling dynamically for a chance to double it. Critical successes double damage, semi‑critical successes deal one‑and‑a‑half times damage, and semi successes halve damage, with throwables using constant damage but relying on a physical roll to determine how many enemies are caught in the AOE. GMs can decide whether NPCs always roll dynamically or use the same choice system as players, adding flexibility and extra lethality. Prosperon remains fully modular-use what you like and toss the rest.

Update February, 21st, 2026 We’ve settled on a front cover design created by my wife, Debra. We wanted to give you a glimpse of Arco Prime on the cover, since it fits the cyberpunk theme much better than our previous, more traditional sci‑fi design