Spore - NPC walking over a bridge (1)

It is not easy to get a NPC using a bridge, but it is possible. You have to * use a disguised gate as bridge * connect both shores with a thin languet under the bridge (no ship can pass this bridge now!) * use invisible gates to prevent the NPC use the natural bridge. * tell the NPC with several waypoints the correct way. This does not work for land vehicles!