I'm working on an XNA isometric game and I've already done lot of work. Since XNA is going to be discontinued, I'm not sure if I should change engines or not. So I'm looking into alternatives.
I'm already working on Unity for another game, a 3d game.
Question 1: Is it possible work with 2D tiles generation in Unity?
Question 2: Will building a 3D world based on Unity using tiles/blocks reduce the game performance?