I didn't see this mentioned before; apparently spies sleeping in boats parked in other civ's city don't get caught, while still enjoy 50% discount after 5 turns. Can anyone confirm this?
In my game last night, I left a spy+caravel in another civ's city and totally forgot about it. He survived almost 2 eras, until I finally remembered and used him on Military Science. So if this is true, then all you need is open boarder and a few boats, and you will not have to worry about your spies getting caught while waiting to make their moves.
In my game last night, I left a spy+caravel in another civ's city and totally forgot about it. He survived almost 2 eras, until I finally remembered and used him on Military Science. So if this is true, then all you need is open boarder and a few boats, and you will not have to worry about your spies getting caught while waiting to make their moves.