title: game development xna/unity3d
body: <p>i am want to build some games,not something big like mmorpg ,games like snake and similar,maybe in future i would like to make a progress.
  i built "pong" with xna before 3 month and left it without any progression.
  now i want program games again and i search on the internet and got to 2 final best options
  xna/unity3d.
  which is better if i know c#?
  tyvm.</p>