I suspected this because there were no objects in the built in multiplayer maps which supported real time physics, but I think i've confirmed it now. I made a nice little chain swing of a gunboat towing a little raft for people in multi games to get into the raft and be towed around in a teamplay map, but it doesn't work AT ALL except on the host PC. The other clients in the game do not see the raft move. Is this just the way the engine works, or am I doing something wrong? The sequence works perfectly in single player and on the host machine for multi.