When you quit a game, there is no AI to play the nation

[wieder]

Instead you can do several things if you don't want to play any more.

You can turn the production to defensive units, making the attack more expensive. You can delegate to the enemy of your worst enemy. You can sell all the best buildings making the attack less profitable. Or you can build settlers and shrink the cities. Or something else.

[Corbeau]

Oh, so it's ok to delegate permanently? Fine then.

edit: No delegation thread and no need to create it now so I'll put it here.

Delegating to Kryon.