It says: No alimentes a los trolls!
it should say: ¡No alimentes a los trolls!
It says: Doble
It should say: Duplícalo
It says: [name of my city] ganado [quantity]T mientras usted estaba ausente.
It should say: [name of my city] ha generado [quantity]T mientras estabas ausente.
I think that all phrases must be not so formal, because the little jokes and quotes when loading the game, give a little hint about a colloquial and relaxed tone in dialogues that is in my opinion the real tone in game.

