by andylatto
ras2124 wrote:
The difference is a question of when does a turn end. As in pretty much every game, it should be up to the player.
I don't think this is true in "pretty much every game". It's true in games in which only the player whose turn it is can do things during his turn. If there are things you can do during another player's turn in a game, I've never seen a game where you can prevent your opponents from taking actions on your turn by saying "Idothisandmyturnisoverrightnow, so you can't take the action you had planned in response because it's TOO LATE, my turn is over".
In particular, I think it's clear that it isn't up to a player when their turn is over in King of Tokyo. There is a card that lets you reroll an opponent's die after his last roll. I think it's clear that if I have that card, you cannot prevent me from using my ability just by saying "my turn is done" immediately after taking your final roll.
Of course, this doesn't answer the original question, other than saying that if you choose to play that you must have 20 points and not be dead at the end of your turn, then a win can be prevented by playing an evolution card that reduces your score after you buy the card that gives you 20 points.
The reason you see a contradiction in the rules is because you are suggesting a turn goes on indefinitely until all players come to an agreement that the turn is over.
I think that this is in fact the normal rule in games. In general, I think the normal rule by which games are played is something like "If there is a phase in which optional actions may be taken, the phase continues until no player chooses to take action". I think the addition of a clause that says "...unless this phase takes place during a player's turn, in which case that player may at any time declare the phase over, and no player may take further actions" is not one I've ever seen in a game, either explicitly or implicitly.