Simguild? I just found a website that had screenshots of their "Flying circus" sim and their follow up BOB sim. Flying Circus was a WW1 online simulation that was made by a small group of enthusiast that founded Simguild in 1997. It was free to play for most of its online time and in the end became pay to play. They were working toward BOB and even had the Beta out for testing when without much warning in 2000 Simguild ceased to exsist. For memmory's see Great sims, Great fun....RIP