Rules for a Time Loop Scenario

Souls like rules inspired by the Sunfall Cycle DnD hack by Steven Lumpkin

Scenario:
The PCs live through the same period of time over and over until they break the loop.
Campaign milestones:

  • Figure out what causes the loop.
  • Figure out how to stop the loop.
  • Break the loop. Stop the doom.

Clocks:
Loop Cycle (hidden in first cycle) - 8 or 10 ticks to fill
Doom (optional and hidden until discovered) - 6+ ticks to fill

  • If the Loop Cycle clock is filled the world resets.
  • Every major PC action, scene, or travel ticks the loop cycle clock.
  • The ā€˜Indulge Viceā€™ and ā€˜Trainā€™ actions can be performed anytime, but fill the loop clock by half.
  • Every full cycle the doom ticks.
  • If Doom is filled, disaster hits.

Loop cycle:

  • Items, coin, and wounds are reset. Dead PCs are revived.
  • Stress, Trauma, XP, and advancements carry over.
  • The world and NPCs reset, but the PCs memories carry over.
  • If all players die, the loop resets.

GM Questions:
What causes the loop? (figure out how to stop the loop during play!)
Why do the PCs remember the loop but the NPCs donā€™t?
How is the doom revealed to the PCs?
What are possible shortcuts or secrets to bypass obstacles later?

Additional Ideas:

  • Players only start with only playbook specific items, unlock more later
  • Certain important NPCs remember the loop as well
  • Change locations depending of cycle clock ticks
  • Give the Players a hub and/or supernatural patron outside the loop
  • Places of Power to revive dead PCs (costs loop ticks?)
  • Add rare artefacts that donā€™t reset by the loop
  • Unlock more stuff in with rare artefacts:
    • Access to basic items at loop start
    • Crew advancements
    • Fast travel / shortcuts
    • Remove a NPC permanently from the loop
    • Let a NPC remember the loop or get a new PC
    • Change Playbook
    • Rituals / Crafting / Long Time Projects
    • Gather Information / Lore Projects

BitD only:

  • If a PC dies, after 1 or 2 loop cycle ticks they switch to the ghost playbook.
  • Ghost PCs are revived to their previous playbook on loop reset.
3 Likes

Nice write up!
Please share play experience you make here.

I might take this as inspiration for ā€œinto the darkā€. BitD had a lot of moving parts. A lighter system and leave more breathing room.

This is fascinating, and could be a super fun campaign. I hope I get the chance to run this someday.