Advanced Search

Scene Unfolding MachineClick to magnify

Scene Unfolding Machine


The Scene Unfolding Machine (SUM) is a supplement of random tables to get ideas during your roleplaying games. It has been created for solo or GM-less play in mind, but you can use it as a way to improvise content as you play.

Its focus lies on NPC interaction and personalities. It gives you innumerable combinations of character behavior, personalities, first impression and even dialogue prompts. On top of that, it includes elements of surprise, reactions, and ways to open up new scenes.

SUM is a must-have resource to expand your Solo RPG setup by giving your Scenes and NPCs a lot more of depth, particularly when you run out of ideas! It expands any solo system, especially with the Plot unfolding machine and the Scene unfolding machine

Discord Server to chat about my tools


Many of these features are only available in this paid version, but you can take a look at the free version of SUM to have an idea about it for free.

  • GM Emulation
    • Figure out what happens while your PCs are still thinking
    • Discover how the universe would react to your PCs crazy ideas
    • Find out what the other factions have been doing in the meantime
  • NPC Emulation
    • Get a feel of the attitude of NPCs you meet
    • Learn what do NPCs contribute to your story
    • Learn how NPCs react to your PCs ideas
    • (v6+ only) Get a distant impression of your NPCs
    • (v6+ only) Figure out what do NPCs talk about
    • (v6+ only) Verify whether the NPCs are being honest
  • PC Enrichment
    • (v6+ only) Figure out your PCs own agenda
    • (v6+ only) How do your PCs backstories affect them today?
    • (v6+ only) Define interesting bonds between your PCs
  • (v6+ only) All tables are refined and retested with hours of actual plays
  • Quickly create deep characters by using novel and movies archetypes
  • Find universal inspiration with mega three d100 oracle tables
  • Customize your dice rolling with a BIAS, so things fit your expectations

LANGUAGES: English, Spanish

Digital Tools to play SUM

Join me and let me know how this works for you :)

Check out my blog here: for actual plays and other goodies

 Customers Who Bought this Title also Purchased
Reviews (0)
Discussions (1)
Customer avatar
Andrew B December 15, 2023 3:37 pm UTC
I bought the Plot Unfolding Machine, Scene Unfolding Machine, and the Game Unfolding Machine from you. Yet none of them are listed here as 'owned' and none of the undates are available for me to download? Why? Is this something that will happen with any purchase from you?
Customer avatar
Saif Addin E December 17, 2023 10:47 pm UTC
I am very sorry about that. No, I don't intend this to happen again in the future.

Reason: DriveThruRPG does not support a price-tag on originally PWYW titles. My goal was to automatically grant access to the new titles to any donors of the old free versions, but DriveThruRPG does not allow that. Since I can/won't no longer maintain and pay fees for older versions, I had to take them invisible. I also thought owners would still have access to files despite being invisible. Please find the older free versions in my page, or reach out to me on Discord (jeansenvaars) for access to any old files.
Customer avatar
Saif Addin E December 17, 2023 11:19 pm UTC
I will have the free versions reappear, sorry for the inconvenience. As a Donor, please reach out and I can send you the paid version ones, I wished DriveThruRPG allowed me to do that through the platform.
Customer avatar
Andrew B December 20, 2023 3:25 pm UTC
I didnt know I got them free. Sorry about that. Its been awhile. I was impressed by their thoroughness. After the first one I was really looking for the others. I thought all three kind of worked well off each other and bounced nicely off other random generators I had. Thanks for the reponce.
Narrow Results
$ to $
 Follow Your Favorites!
NotificationsSign in to get custom notifications of new products!
 Recent History

Product Information
Silver seller
File Size:
26.42 MB
Original electronic Click for more information
Scanned image
These products were created by scanning an original printed edition. Most older books are in scanned image format because original digital layout files never existed or were no longer available from the publisher.

For PDF download editions, each page has been run through Optical Character Recognition (OCR) software to attempt to decipher the printed text. The result of this OCR process is placed invisibly behind the picture of each scanned page, to allow for text searching. However, any text in a given book set on a graphical background or in handwritten fonts would most likely not be picked up by the OCR software, and is therefore not searchable. Also, a few larger books may be resampled to fit into the system, and may not have this searchable text background.

For printed books, we have performed high-resolution scans of an original hardcopy of the book. We essentially digitally re-master the book. Unfortunately, the resulting quality of these books is not as high. It's the problem of making a copy of a copy. The text is fine for reading, but illustration work starts to run dark, pixellating and/or losing shades of grey. Moiré patterns may develop in photos. We mark clearly which print titles come from scanned image books so that you can make an informed purchase decision about the quality of what you will receive.
Original electronic format
These ebooks were created from the original electronic layout files, and therefore are fully text searchable. Also, their file size tends to be smaller than scanned image books. Most newer books are in the original electronic format. Both download and print editions of such books should be high quality.
File Last Updated:
March 24, 2024
This title was added to our catalog on December 13, 2023.
Publisher Average Rating