Having now played a few PBEM games, I find myself re-evaluating the value of prestige points throughout the game. You need at least a few for diplomacy, but really only a PoP or two or even a +prestige relic is needed to take care of that. The most striking thing that I have noticed is that no player that has run up a large lead has gone on to win the game.
Game A: I run up a large lead in my first PBEM game, a trailing player takes Pandemonium and then my stronghold. Two more players are knocked out, including the owner of Pandemonium. Two players remain, and the Conclave does not reconvene. One wins by (I believe) finally taking Pandemonium and holding it.
Game B: I run up a large lead, I am picked at on all sides, until I lose all 3 PoPs and my only legion in one turn. Later, 4 of the 5 players are excommunicated through masked rituals and an Expel the Heretic Event at 14/15 tokens. The fifth player wins when the last token is drawn. I could have remained prestige leader, had I not been drawing secret objectives out of boredom once excommunicated.
Game C: Massive prestige leader (300-350, second place (me!) around 100) has Expel the Heretic Event played on her. She takes Pandemonium. Pandemonium is destroyed by Orb of Oblivion. The conclave reforms. I win on prestige, without having played a game to be particularly proud of.
Game D: Two players vie for prestige lead while I amass a small number of points and player 4 craters to 0 prestige early. Late-game I am excommunicated by a masked ritual and destroyed by the (formerly) 0 prestige player, who now appears to be well on his way to a military victory.
Obviously painting a target on yourself and setting up a 5-v-1 situation is not a great idea. But so far I'm getting the sense that prestige victories are rare, and when they arrive they aren't likely to end with the longtime leader on top.
So at what point do prestige points stop being an asset and become a liability? Is it best to be in third or fourth place, with sort of a middling level of prestige so as not to look particularly strong or weak? Are these just ravings built upon a small sample size? And are the people I've played against all rotten bastards, or is that just how this game is set up?
Okay I think I know that answer to that last one.
