[Eru]

Dunno how to do it offline, but I think there's a way to purge all accounts & wipe all the houses/player-owned items from the world. I think if you just delete all playermobiles and remove all the houses, you'd end up with a blank world if you let the server run long enough for all the items that were in the houses to decay.

Wouldn't want to just wipe all non-static items since that'd break spawning and all the events and stuff that are up.