This is something I whipped up from a notebook 1-shot/campaign divergent idea.
This is not fully fleshed out, it's just my scratches of how it all works

  • Players wake up in an individual cell
  • Each cell has a "trap" slab that when stood on sends the central ball of magical streams dancing, it also opens the cell bars to EVERY cell
  • Each cell has a certain hue (the black cell is magical darkness)
  • Goal is to get all cells the same hue and the portal in the center matches the colours and becomes a portal out of the nightmare
  • For each failed attempt a d20 table is used to spawn a monster(s)
  • All cell slabs need to be down at the same time to activate the portal out


All done in photoshop
7mjLD0p.jpg