JoeGKushner
Adventurer
A long time ago, when I had both more time and energy, I used to play with both time and planar perceptions.
For example, I was heavily into the Eternal Champion. Characters were from different settings and would meet each other via Planescape, Ravenloft, Spelljammer or other plot device like the World Serpent Inn.
However, some of the characters would've meet the others one already, or had knowledge of their meeting in the future. It was complicated but fun.
Haven't done that in a while though as it basically meant running many mini-campaigns that lead to the build up of the meeting of the various Eternal Champions to pull off a "Four Who Are One" style adventure.
For example, I was heavily into the Eternal Champion. Characters were from different settings and would meet each other via Planescape, Ravenloft, Spelljammer or other plot device like the World Serpent Inn.
However, some of the characters would've meet the others one already, or had knowledge of their meeting in the future. It was complicated but fun.
Haven't done that in a while though as it basically meant running many mini-campaigns that lead to the build up of the meeting of the various Eternal Champions to pull off a "Four Who Are One" style adventure.