Are there any board or card games with changing goals?
Before you answer real quick saying "yes", let me define what I mean. When I say change goal, I mean that the player works towards that goal not future goals. That means they aren't trying to be the final victor. They are trying to achieve what they have been assigned right now. The best way to illustrate would be some examples.
- Dodgeball: Some variants of dodgeball are such that if you get hit, you join the other team. Note that if your team is losing, you could increase your chances of winning by getting hit and joining the other team, but this is not the player's goal. The player's goal is to make their current team win, if it is inevitable they won't be on that team when they do.
- DnD: In DnD and similar games, a player can get mind controlled. When they do, they have different goals then when not mind controlled. In particular, they will work towards those goals even if they know the mind control is temporary.
- Playing a game against yourself: When playing a game against yourself (like Chess), you switch between which side you want to win.
- Most board games where you change teams: You are allowed to take into account the fact that the teams are temporary. Your goal is to be the final victor, not help your current team do well.
- Card games with effects to change the winning condition. In MtG, for example, you can get into a position where getting your opponent to 0 life is no longer a winning condition. That being said, you can still have the goal of undoing that situation, and then getting your opponent to 0 life. Your goal is always to be the final victor.
Notice that the examples aren't board or card games (playing a game against yourself isn't really a game, just a way to practice a game). Are there any board or card game examples?