Tactical Tuesday: The Cosmic Foam


Exploring Bubble Theory in Pulp Sci-Fi TTRPGs

By T. Glenn Bane

“Reality is a fragile thing, dear reader. It’s not the unyielding constant we like to believe it is. Imagine, if you will, that our universe is but one bubble in a vast cosmic foam, each bubble a separate reality, brushing, colliding, and sometimes merging with others. This is the essence of Bubble Theory—a concept that can turn your pulp sci-fi TTRPG into a mind-bending journey through overlapping dimensions, surreal events, and the very fabric of existence.”


What is Bubble Theory?

Bubble Theory is the idea that our universe is just one of many, floating in a vast multiversal foam. Each bubble represents a different reality, with its own rules, physics, and inhabitants. Sometimes, these bubbles collide or overlap, creating areas where the boundaries between realities blur.

But here’s the twist: these overlaps don’t have to be limited to physical space. They can occur in events, dreams, psychological states, or even shared memories. Imagine a character experiencing déjà vu because they’re remembering something that happened in an overlapping reality. Or a location where time flows differently because it’s caught between two universes. The possibilities are as endless as the multiverse itself.


Using Bubble Theory in Your TTRPG

Bubble Theory is a goldmine for GMs looking to add depth, mystery, and a touch of the surreal to their games. Here’s how you can use it:

1. Overlapping Realities in Physical Space

The most straightforward use of Bubble Theory is to create areas where two or more realities physically overlap. These could be:

  • A derelict spaceship that exists in two universes at once, with parts of it flickering in and out of existence.
  • A city where the architecture shifts depending on which reality is dominant at the moment.
  • A battlefield where soldiers from different timelines are fighting the same war, unaware of each other’s existence.

2. Events That Transcend Realities

Not all overlaps have to be physical. Some can manifest as events that ripple across multiple realities. For example:

  • A catastrophic explosion in one universe causes tremors in another, leading the players to investigate the source.
  • A solar eclipse that occurs simultaneously in several realities, creating a moment where the boundaries between them weaken.
  • A prophecy that exists in multiple universes, but with different interpretations in each.

3. Dreams and Psychological Overlaps

Bubble Theory can also be used to blur the line between reality and the mind. Consider:

  • A character who dreams of events happening in another reality, only to discover they’re not dreams at all.
  • An NPC who seems to know the players’ secrets because they’re connected to a version of the players in another universe.
  • A location where visitors experience vivid hallucinations, each one tied to a different reality.

4. Thematic Overlaps

Sometimes, the overlap isn’t about space or events but about themes and emotions. For instance:

  • A war-torn planet where the despair of its inhabitants resonates with a similar conflict in another reality, creating a shared sense of hopelessness.
  • A love story that plays out across multiple universes, with the characters meeting different versions of their soulmate.
  • A villain who exists in multiple realities, each version working toward the same sinister goal.

Tips for GMs

  1. Start Small: Introduce Bubble Theory gradually. A single overlapping event or location can be enough to intrigue your players without overwhelming them.
  2. Use Visual and Sensory Cues: Describe the overlaps in vivid detail. What do they look like? How do they feel? Is there a sound, a smell, or a change in temperature?
  3. Play with Perception: Let the players question what’s real. Are they seeing another reality, or is it all in their heads?
  4. Make It Personal: Tie the overlaps to the characters’ backstories or goals. A reality where a player’s lost loved one is still alive can create powerful emotional stakes.
  5. Keep It Mysterious: Don’t explain everything. Part of the appeal of Bubble Theory is its ambiguity. Let your players theorize and draw their own conclusions.

Tactical Tuesday is Taking a Break

Now, before we wrap up, I have a quick announcement. Tactical Tuesday will be going on break until November. Why, you ask? Because I’m diving headfirst into T. Glenn Bane’s 31 Days of Halloween! That’s right—31 movie reviews in the 31 days of October, culminating in a grand finale on Halloween night.

Subscribers will receive each review as it’s published, but if you’re curious about what’s on the docket, the full list of movies is available on our home page at Scaldcrow.com. It’s going to be a spooky, thrilling ride, and I can’t wait to share it with you.


Final Thoughts: The Infinite Possibilities of Bubble Theory

“Bubble Theory is more than just a concept—it’s a doorway to infinite possibilities. It’s a way to challenge your players, to make them question the nature of reality, and to create stories that linger long after the game is over.”

So, dear GM, take this idea and run with it. Let your players step into the unknown, where realities collide and the rules of existence are rewritten. And remember: the best stories are the ones that leave us wondering what’s real and what’s not.

Until next time, keep your dice rolling, your players guessing, and your imagination bubbling over. See you in November—and don’t forget to check out T. Glenn Bane’s 31 Days of Halloween!

“After all, reality is just a bubble waiting to pop.”

Eyes Sharp Rocketeers and Space Cadets! We have room to onboard more subscribers on our Sci-Fi flight. Get the word out. We’re building a new world of Sci-Fi gamers here. While you are at it, take a look at our Geek Oper Index, and catch up on some of the articles you may have missed.

Oh, yeah, before you go, I’m not sending you back to your game empty-handed. Here is a little something to help you craft those bubble theory games. A couple of tables to get the ideas flowing.

2d6 Event Tables for Bubble Theory in Pulp Sci-Fi TTRPGs

To help you bring Bubble Theory to life in your TTRPG, here are two 2d6 event tables. These tables are designed to add unpredictable, reality-bending moments to your game. One table focuses on physical overlaps, while the other explores psychological and thematic overlaps.


How to Use These Tables

  1. When to Roll: Use these tables whenever your players enter an area where realities overlap, interact with a mysterious artifact, or experience a moment of heightened tension.
  2. Rolling the Dice: Roll 2d6 and consult the corresponding table. The result will give you an event to incorporate into your game.
  3. Adapting the Results: Feel free to tweak the events to fit your story. These are starting points meant to inspire creativity.
  4. Layer the Weirdness: Combine results from both tables for truly mind-bending moments. For example, a physical overlap might trigger a psychological effect, creating a multi-layered experience.

Table 1: Physical Overlaps (2d6)

These events focus on tangible, spatial phenomena caused by colliding realities.

RollEvent
2A section of the environment flickers, revealing a completely different landscape (e.g., a jungle in the middle of a spaceship).
3Gravity shifts unpredictably, pulling objects and characters toward a point that doesn’t exist in this reality.
4A doorway or corridor leads to a location that shouldn’t be there, such as a room from another timeline or dimension.
5Objects from another reality begin to materialize—tools, weapons, or even strange creatures.
6Time flows differently in this area. Characters experience minutes as hours or vice versa.
7A shimmering barrier appears, separating the players from an area where two realities are visibly colliding.
8The players’ equipment malfunctions as it tries to reconcile conflicting physical laws.
9A character’s reflection in a mirror or puddle shows a version of themselves from another reality.
10A storm of glowing, multicolored energy sweeps through the area, temporarily merging the two realities.
11A structure or vehicle from another reality crashes into this one, creating chaos and confusion.
12The players encounter alternate versions of themselves, each with their own agenda.

Table 2: Psychological and Thematic Overlaps (2d6)

These events delve into the mental, emotional, and thematic effects of colliding realities.

RollEvent
2A character begins to hear whispers in a language they don’t know but somehow understand.
3The players experience vivid dreams or visions of events happening in another reality.
4An NPC suddenly remembers the players from a past encounter that never happened in this reality.
5A character feels an overwhelming sense of déjà vu, as if they’ve lived this moment before.
6The players’ emotions are amplified, causing fear, anger, or joy to spiral out of control.
7A shared memory surfaces among the group, but no one can agree on when or where it happened.
8A character’s personality temporarily shifts to match their counterpart in another reality.
9The players encounter a riddle or prophecy that seems to reference events from multiple realities.
10A character’s shadow begins to act independently, hinting at a connection to another reality.
11The players feel as though they’re being watched by an unseen presence from another dimension.
12A character gains knowledge or skills they didn’t have before, as if they’ve borrowed them from another version of themselves.

Tips for GMs

Consequences: Make sure these events have lasting effects. A character who meets their alternate self or gains knowledge from another reality should feel the impact of that encounter.

Foreshadowing: Use these events to hint at the larger implications of Bubble Theory in your campaign.

Escalation: Start with subtle effects and build up to more dramatic overlaps as the story progresses.

Player Involvement: Encourage your players to interpret the events and theorize about what’s happening. Their ideas can add depth to the story.

.Thant’s it, Star-walkers…dismissed.