Why is it so hard to infiltrate another civ with spies? About 4 out of 5 of the spies I try to plant are discovered straight away, and the other civ then usually declares war with me right off the bat. Succeeding in the missions themselves seems to be just as unlikely.
Are there certain conditions where spies are more likely to slip in undetected? Also, once they are in position, are there any improvements which boost their chances of success, other than choosing the more expensive "safely" option?
Does anyone use them successfully? The last couple of games I've played I just haven't bothered with them, but I'd like to know if anyone's ever got their money's worth from spies.
Are there certain conditions where spies are more likely to slip in undetected? Also, once they are in position, are there any improvements which boost their chances of success, other than choosing the more expensive "safely" option?
Does anyone use them successfully? The last couple of games I've played I just haven't bothered with them, but I'd like to know if anyone's ever got their money's worth from spies.