So I had this idea to run two campaigns in the same world.
Two groups of players play separate campaigns that actually affect the same world. They will only know what happens from their perspective, but will see the effects of the other groups play. At no time will they actually know who is an NPC and who is a human player. Perhaps, they will eventually even run into each other at some point.
Do you think this is doable with DW rules? It would be interesting to see the groups end up meeting and actually playing as one group at some point, combining the two into one campaign at some point.